212020111221200 has 60 divisors (see below), whose sum is σ = 509455724889228. Its totient is φ = 84795156633600.

The previous prime is 212020111221067. The next prime is 212020111221229. The reversal of 212020111221200 is 2122111020212.

It can be written as a sum of positive squares in 6 ways, for example, as 1116640250944 + 210903470970256 = 1056712^2 + 14522516^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37638857 + ... + 42903656.

Almost surely, 2^{212020111221200} is an apocalyptic number.

212020111221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212020111221200 is an abundant number, since it is smaller than the sum of its proper divisors (297435613668028).

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

212020111221200 is a wasteful number, since it uses less digits than its factorization.

212020111221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80549112 (or 80549101 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212020111221200 its reverse (2122111020212), we get a palindrome (214142222241412).

The spelling of 212020111221200 in words is "two hundred twelve trillion, twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred".