22121321233312 has 48 divisors (see below), whose sum is σ = 50008863748032. Its totient is φ = 9435634629120.

The previous prime is 22121321233273. The next prime is 22121321233313. The reversal of 22121321233312 is 21333212312122.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (22121321233313) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 233971453 + ... + 234065980.

It is an arithmetic number, because the mean of its divisors is an integer number (1041851328084).

Almost surely, 2^{22121321233312} is an apocalyptic number.

It is an amenable number.

22121321233312 is an abundant number, since it is smaller than the sum of its proper divisors (27887542514720).

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

22121321233312 is a wasteful number, since it uses less digits than its factorization.

22121321233312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468037661 (or 468037653 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

Adding to 22121321233312 its reverse (21333212312122), we get a palindrome (43454533545434).

It can be divided in two parts, 221213 and 21233312, that added together give a triangular number (21454525 = T₆₅₅₀).

The spelling of 22121321233312 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred twenty-one million, two hundred thirty-three thousand, three hundred twelve".