100021300120 has 32 divisors (see below), whose sum is σ = 257197629600. Its totient is φ = 34293017088.

The previous prime is 100021300091. The next prime is 100021300123. The reversal of 100021300120 is 21003120001.

It is a super-2 number, since 2×100021300120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 100021300097 and 100021300106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021300123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178609185 + ... + 178609744.

It is an arithmetic number, because the mean of its divisors is an integer number (8037425925).

Almost surely, 2^100021300120 is an apocalyptic number.

100021300120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021300120 is an abundant number, since it is smaller than the sum of its proper divisors (157176329480).

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

100021300120 is a wasteful number, since it uses less digits than its factorization.

100021300120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357218947 (or 357218943 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 100021300120 its reverse (21003120001), we get a palindrome (121024420121).

The spelling of 100021300120 in words is "one hundred billion, twenty-one million, three hundred thousand, one hundred twenty".