100021022120 has 16 divisors (see below), whose sum is σ = 225047299860. Its totient is φ = 40008408832.

The previous prime is 100021022111. The next prime is 100021022131. The reversal of 100021022120 is 21220120001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 94971214276 + 5049807844 = 308174^2 + 71062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250262737 + ... + 1250262816.

Almost surely, 2^100021022120 is an apocalyptic number.

100021022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021022120 is an abundant number, since it is smaller than the sum of its proper divisors (125026277740).

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

100021022120 is a wasteful number, since it uses less digits than its factorization.

100021022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500525564 (or 2500525560 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 100021022120 its reverse (21220120001), we get a palindrome (121241142121).

The spelling of 100021022120 in words is "one hundred billion, twenty-one million, twenty-two thousand, one hundred twenty".