1020010121220 has 192 divisors, whose sum is σ = 3055893313536. Its totient is φ = 253648834560.

The previous prime is 1020010121203. The next prime is 1020010121267. The reversal of 1020010121220 is 221210100201.

1020010121220 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 1020010121196 and 1020010121205.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8911755 + ... + 9025485.

It is an arithmetic number, because the mean of its divisors is an integer number (15916111008).

Almost surely, 2^{1020010121220} is an apocalyptic number.

1020010121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020010121220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1527946656768).

1020010121220 is an abundant number, since it is smaller than the sum of its proper divisors (2035883192316).

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

1020010121220 is a wasteful number, since it uses less digits than its factorization.

1020010121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113930 (or 113928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1020010121220 its reverse (221210100201), we get a palindrome (1241220221421).

The spelling of 1020010121220 in words is "one trillion, twenty billion, ten million, one hundred twenty-one thousand, two hundred twenty".