210120112120020 has 96 divisors (see below), whose sum is σ = 594960969052800. Its totient is φ = 55401140281344.

The previous prime is 210120112119991. The next prime is 210120112120033. The reversal of 210120112120020 is 20021211021012.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 31 ways as a sum of consecutive naturals, for example, 235470532 + ... + 236361188.

It is an arithmetic number, because the mean of its divisors is an integer number (6197510094300).

Almost surely, 2^{210120112120020} is an apocalyptic number.

210120112120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210120112120020 is an abundant number, since it is smaller than the sum of its proper divisors (384840856932780).

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

210120112120020 is a wasteful number, since it uses less digits than its factorization.

210120112120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934937 (or 934935 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210120112120020 its reverse (20021211021012), we get a palindrome (230141323141032).

The spelling of 210120112120020 in words is "two hundred ten trillion, one hundred twenty billion, one hundred twelve million, one hundred twenty thousand, twenty".