212123331320 has 32 divisors (see below), whose sum is σ = 479038691520. Its totient is φ = 84536231040.

The previous prime is 212123331271. The next prime is 212123331341. The reversal of 212123331320 is 23133321212.

It is a congruent number.

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, 9773447 + ... + 9795126.

It is an arithmetic number, because the mean of its divisors is an integer number (14969959110).

Almost surely, 2^212123331320 is an apocalyptic number.

212123331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212123331320 is an abundant number, since it is smaller than the sum of its proper divisors (266915360200).

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

212123331320 is a wasteful number, since it uses less digits than its factorization.

212123331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19568855 (or 19568851 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 212123331320 its reverse (23133321212), we get a palindrome (235256652532).

The spelling of 212123331320 in words is "two hundred twelve billion, one hundred twenty-three million, three hundred thirty-one thousand, three hundred twenty".