23321221311312 has 160 divisors (see below), whose sum is σ = 68731094678400. Its totient is φ = 7567039484928.

The previous prime is 23321221311247. The next prime is 23321221311313. The reversal of 23321221311312 is 21311312212332.

23321221311312 is a `hidden beast` number, since 2 + 3 + 3 + 2 + 12 + 21 + 311 + 312 = 666.

It is a super-2 number, since 2×23321221311312² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23321221311313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3300364 + ... + 7585172.

It is an arithmetic number, because the mean of its divisors is an integer number (429569341740).

Almost surely, 2^{23321221311312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23321221311312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34365547339200).

23321221311312 is an abundant number, since it is smaller than the sum of its proper divisors (45409873367088).

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

23321221311312 is a wasteful number, since it uses less digits than its factorization.

23321221311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285162 (or 4285150 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 23321221311312 its reverse (21311312212332), we get a palindrome (44632533523644).

The spelling of 23321221311312 in words is "twenty-three trillion, three hundred twenty-one billion, two hundred twenty-one million, three hundred eleven thousand, three hundred twelve".