212400132312 has 32 divisors (see below), whose sum is σ = 543951560880. Its totient is φ = 69073213440.

The previous prime is 212400132311. The next prime is 212400132331. The reversal of 212400132312 is 213231004212.

It is a super-2 number, since 2×212400132312² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212400132311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107925913 + ... + 107927880.

Almost surely, 2^212400132312 is an apocalyptic number.

It is an amenable number.

212400132312 is an abundant number, since it is smaller than the sum of its proper divisors (331551428568).

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

212400132312 is a wasteful number, since it uses less digits than its factorization.

212400132312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215853843 (or 215853839 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 212400132312 its reverse (213231004212), we get a palindrome (425631136524).

The spelling of 212400132312 in words is "two hundred twelve billion, four hundred million, one hundred thirty-two thousand, three hundred twelve".