210020122100 has 36 divisors (see below), whose sum is σ = 456504636000. Its totient is φ = 83867777760.

The previous prime is 210020122097. The next prime is 210020122177. The reversal of 210020122100 is 1221020012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1693190 + ... + 1812989.

Almost surely, 2^210020122100 is an apocalyptic number.

210020122100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210020122100 is an abundant number, since it is smaller than the sum of its proper divisors (246484513900).

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

210020122100 is a wasteful number, since it uses less digits than its factorization.

210020122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3506792 (or 3506785 counting only the distinct ones).

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

Adding to 210020122100 its reverse (1221020012), we get a palindrome (211241142112).

The spelling of 210020122100 in words is "two hundred ten billion, twenty million, one hundred twenty-two thousand, one hundred".