212111210120 has 32 divisors (see below), whose sum is σ = 488349069120. Its totient is φ = 82871355840.

The previous prime is 212111210071. The next prime is 212111210177. The reversal of 212111210120 is 21012111212.

It is a junction number, because it is equal to n+sod(n) for n = 212111210095 and 212111210104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61658516 + ... + 61661955.

It is an arithmetic number, because the mean of its divisors is an integer number (15260908410).

Almost surely, 2^212111210120 is an apocalyptic number.

212111210120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111210120 is an abundant number, since it is smaller than the sum of its proper divisors (276237859000).

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

212111210120 is a wasteful number, since it uses less digits than its factorization.

212111210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123320525 (or 123320521 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212111210120 its reverse (21012111212), we get a palindrome (233123321332).

The spelling of 212111210120 in words is "two hundred twelve billion, one hundred eleven million, two hundred ten thousand, one hundred twenty".