213122031201312 has 24 divisors (see below), whose sum is σ = 559445331903696. Its totient is φ = 71040677067072.

The previous prime is 213122031201281. The next prime is 213122031201337. The reversal of 213122031201312 is 213102130221312.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110010579078 + ... + 1110010579269.

It is an arithmetic number, because the mean of its divisors is an integer number (23310222162654).

Almost surely, 2^{213122031201312} is an apocalyptic number.

It is an amenable number.

213122031201312 is an abundant number, since it is smaller than the sum of its proper divisors (346323300702384).

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

213122031201312 is a wasteful number, since it uses less digits than its factorization.

213122031201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220021158360 (or 2220021158352 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 213122031201312 its reverse (213102130221312), we get a palindrome (426224161422624).

The spelling of 213122031201312 in words is "two hundred thirteen trillion, one hundred twenty-two billion, thirty-one million, two hundred one thousand, three hundred twelve".