210120100220 has 12 divisors (see below), whose sum is σ = 441252210504. Its totient is φ = 84048040080.

The previous prime is 210120100207. The next prime is 210120100243. The reversal of 210120100220 is 22001021012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5253002486 + ... + 5253002525.

It is an arithmetic number, because the mean of its divisors is an integer number (36771017542).

Almost surely, 2^210120100220 is an apocalyptic number.

210120100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210120100220 is an abundant number, since it is smaller than the sum of its proper divisors (231132110284).

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

210120100220 is a wasteful number, since it uses less digits than its factorization.

210120100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506005020 (or 10506005018 counting only the distinct ones).

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

Adding to 210120100220 its reverse (22001021012), we get a palindrome (232121121232).

The spelling of 210120100220 in words is "two hundred ten billion, one hundred twenty million, one hundred thousand, two hundred twenty".