212111311113320 has 64 divisors (see below), whose sum is σ = 493930815613200. Its totient is φ = 81921793720320.

The previous prime is 212111311113313. The next prime is 212111311113323. The reversal of 212111311113320 is 23311113111212.

It can be written as a sum of positive squares in 8 ways, for example, as 27996860934436 + 184114450178884 = 5291206^2 + 13568878^2 .

It is not an unprimeable number, because it can be changed into a prime (212111311113323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666522185 + ... + 666840344.

Almost surely, 2^{212111311113320} is an apocalyptic number.

212111311113320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111311113320 is an abundant number, since it is smaller than the sum of its proper divisors (281819504499880).

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

212111311113320 is a wasteful number, since it uses less digits than its factorization.

212111311113320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333362678 (or 1333362674 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 212111311113320 its reverse (23311113111212), we get a palindrome (235422424224532).

The spelling of 212111311113320 in words is "two hundred twelve trillion, one hundred eleven billion, three hundred eleven million, one hundred thirteen thousand, three hundred twenty".