23112021213312 has 64 divisors (see below), whose sum is σ = 61472405280000. Its totient is φ = 7693829950464.

The previous prime is 23112021213277. The next prime is 23112021213389. The reversal of 23112021213312 is 21331212021132.

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 (24).

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, 39463312 + ... + 40044687.

It is an arithmetic number, because the mean of its divisors is an integer number (960506332500).

Almost surely, 2^{23112021213312} is an apocalyptic number.

It is an amenable number.

23112021213312 is an abundant number, since it is smaller than the sum of its proper divisors (38360384066688).

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

23112021213312 is an equidigital number, since it uses as much as digits as its factorization.

23112021213312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79508773 (or 79508761 counting only the distinct ones).

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

Adding to 23112021213312 its reverse (21331212021132), we get a palindrome (44443233234444).

The spelling of 23112021213312 in words is "twenty-three trillion, one hundred twelve billion, twenty-one million, two hundred thirteen thousand, three hundred twelve".