211200020020120 has 32 divisors (see below), whose sum is σ = 476053187007600. Its totient is φ = 84328338325888.

The previous prime is 211200020020081. The next prime is 211200020020153. The reversal of 211200020020120 is 21020020002112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 211200020020120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4739655010 + ... + 4739699569.

Almost surely, 2^{211200020020120} is an apocalyptic number.

211200020020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211200020020120 is an abundant number, since it is smaller than the sum of its proper divisors (264853166987480).

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

211200020020120 is a wasteful number, since it uses less digits than its factorization.

211200020020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9479355147 (or 9479355143 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211200020020120 its reverse (21020020002112), we get a palindrome (232220040022232).

The spelling of 211200020020120 in words is "two hundred eleven trillion, two hundred billion, twenty million, twenty thousand, one hundred twenty".