100021122000 has 160 divisors (see below), whose sum is σ = 358298079360. Its totient is φ = 26672284800.

The previous prime is 100021121999. The next prime is 100021122011. The reversal of 100021122000 is 221120001.

It is a super-2 number, since 2×100021122000² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 872122 + ... + 980121.

It is an arithmetic number, because the mean of its divisors is an integer number (2239362996).

Almost surely, 2^100021122000 is an apocalyptic number.

100021122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021122000 is an abundant number, since it is smaller than the sum of its proper divisors (258276957360).

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

100021122000 is a wasteful number, since it uses less digits than its factorization.

100021122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852275 (or 1852253 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 100021122000 its reverse (221120001), we get a palindrome (100242242001).

The spelling of 100021122000 in words is "one hundred billion, twenty-one million, one hundred twenty-two thousand".