210101120100 has 108 divisors (see below), whose sum is σ = 664944274176. Its totient is φ = 55482989760.

The previous prime is 210101120093. The next prime is 210101120111. The reversal of 210101120100 is 1021101012.

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 35 ways as a sum of consecutive naturals, for example, 1040532 + ... + 1225931.

Almost surely, 2^210101120100 is an apocalyptic number.

210101120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101120100 is an abundant number, since it is smaller than the sum of its proper divisors (454843154076).

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

210101120100 is a wasteful number, since it uses less digits than its factorization.

210101120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266586 (or 2266576 counting only the distinct ones).

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

Adding to 210101120100 its reverse (1021101012), we get a palindrome (211122221112).

The spelling of 210101120100 in words is "two hundred ten billion, one hundred one million, one hundred twenty thousand, one hundred".