10011021000 has 64 divisors (see below), whose sum is σ = 31234394880. Its totient is φ = 2669604800.

The previous prime is 10011020989. The next prime is 10011021001. The reversal of 10011021000 is 12011001.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 10011021000.

It is not an unprimeable number, because it can be changed into a prime (10011021001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665504 + ... + 1671503.

It is an arithmetic number, because the mean of its divisors is an integer number (488037420).

Almost surely, 2^10011021000 is an apocalyptic number.

10011021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10011021000 is an abundant number, since it is smaller than the sum of its proper divisors (21223373880).

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

10011021000 is a wasteful number, since it uses less digits than its factorization.

10011021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3337031 (or 3337017 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 10011021000 its reverse (12011001), we get a palindrome (10023032001).

Subtracting from 10011021000 its reverse (12011001), we obtain a palindrome (9999009999).

The spelling of 10011021000 in words is "ten billion, eleven million, twenty-one thousand".