22021424503212 has 48 divisors (see below), whose sum is σ = 53172667668960. Its totient is φ = 7085021002752.

The previous prime is 22021424503193. The next prime is 22021424503213. The reversal of 22021424503212 is 21230542412022.

It is a self number, because there is not a number n which added to its sum of digits gives 22021424503212.

It is not an unprimeable number, because it can be changed into a prime (22021424503213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9361293 + ... + 11475044.

It is an arithmetic number, because the mean of its divisors is an integer number (1107763909770).

Almost surely, 2^{22021424503212} is an apocalyptic number.

It is an amenable number.

22021424503212 is an abundant number, since it is smaller than the sum of its proper divisors (31151243165748).

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

22021424503212 is a wasteful number, since it uses less digits than its factorization.

22021424503212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20839410 (or 20839408 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 22021424503212 its reverse (21230542412022), we get a palindrome (43251966915234).

The spelling of 22021424503212 in words is "twenty-two trillion, twenty-one billion, four hundred twenty-four million, five hundred three thousand, two hundred twelve".