211210212120120 has 48 divisors (see below), whose sum is σ = 686433189391560. Its totient is φ = 56322723231936.

The previous prime is 211210212120107. The next prime is 211210212120139. The reversal of 211210212120120 is 21021212012112.

211210212120120 is a `hidden beast` number, since 2 + 1 + 1 + 210 + 212 + 120 + 120 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211210212120093 and 211210212120102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293347516474 + ... + 293347517193.

Almost surely, 2^{211210212120120} is an apocalyptic number.

211210212120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210212120120 is an abundant number, since it is smaller than the sum of its proper divisors (475222977271440).

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

211210212120120 is a wasteful number, since it uses less digits than its factorization.

211210212120120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586695033684 (or 586695033677 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211210212120120 its reverse (21021212012112), we get a palindrome (232231424132232).

The spelling of 211210212120120 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty".