212321122120 has 32 divisors (see below), whose sum is σ = 477946265400. Its totient is φ = 84888672768.

The previous prime is 212321122103. The next prime is 212321122199. The reversal of 212321122120 is 21221123212.

It can be written as a sum of positive squares in 4 ways, for example, as 107729681284 + 104591440836 = 328222^2 + 323406^2 .

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, 1156455 + ... + 1327414.

Almost surely, 2^212321122120 is an apocalyptic number.

212321122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212321122120 is an abundant number, since it is smaller than the sum of its proper divisors (265625143280).

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

212321122120 is a wasteful number, since it uses less digits than its factorization.

212321122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486017 (or 2486013 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 212321122120 its reverse (21221123212), we get a palindrome (233542245332).

The spelling of 212321122120 in words is "two hundred twelve billion, three hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty".