120211100100 has 216 divisors, whose sum is σ = 463748026560. Its totient is φ = 25363203840.

The previous prime is 120211100089. The next prime is 120211100123. The reversal of 120211100100 is 1001112021.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 651990 + ... + 815789.

Almost surely, 2^120211100100 is an apocalyptic number.

120211100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120211100100 is an abundant number, since it is smaller than the sum of its proper divisors (343536926460).

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

120211100100 is a wasteful number, since it uses less digits than its factorization.

120211100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467819 (or 1467809 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 120211100100 its reverse (1001112021), we get a palindrome (121212212121).

The spelling of 120211100100 in words is "one hundred twenty billion, two hundred eleven million, one hundred thousand, one hundred".