212132221312 has 64 divisors (see below), whose sum is σ = 465255925200. Its totient is φ = 95539046400.

The previous prime is 212132221237. The next prime is 212132221321. The reversal of 212132221312 is 213122231212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 537639 + ... + 844582.

Almost surely, 2^212132221312 is an apocalyptic number.

212132221312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212132221312 is an abundant number, since it is smaller than the sum of its proper divisors (253123703888).

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

212132221312 is a wasteful number, since it uses less digits than its factorization.

212132221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382355 (or 1382343 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 212132221312 its reverse (213122231212), we get a palindrome (425254452524).

The spelling of 212132221312 in words is "two hundred twelve billion, one hundred thirty-two million, two hundred twenty-one thousand, three hundred twelve".