11001021210 has 256 divisors, whose sum is σ = 31510840320. Its totient is φ = 2724986880.

The previous prime is 11001021197. The next prime is 11001021217. The reversal of 11001021210 is 1212010011.

It is a happy number.

11001021210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11001021192 and 11001021201.

It is not an unprimeable number, because it can be changed into a prime (11001021217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42805402 + ... + 42805658.

It is an arithmetic number, because the mean of its divisors is an integer number (123089220).

Almost surely, 2^11001021210 is an apocalyptic number.

11001021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11001021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15755420160).

11001021210 is an abundant number, since it is smaller than the sum of its proper divisors (20509819110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11001021210 is a wasteful number, since it uses less digits than its factorization.

11001021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11001021210 its reverse (1212010011), we get a palindrome (12213031221).

The spelling of 11001021210 in words is "eleven billion, one million, twenty-one thousand, two hundred ten".