12221010021122 has 24 divisors (see below), whose sum is σ = 21325662725004. Its totient is φ = 5237269373952.

The previous prime is 12221010021091. The next prime is 12221010021127. The reversal of 12221010021122 is 22112001012221.

It can be written as a sum of positive squares in 2 ways, for example, as 12143754374521 + 77255646601 = 3484789^2 + 277949^2 .

It is a super-2 number, since 2×12221010021122² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12221010021122.

It is not an unprimeable number, because it can be changed into a prime (12221010021127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1959023 + ... + 5317874.

Almost surely, 2^{12221010021122} is an apocalyptic number.

12221010021122 is a deficient number, since it is larger than the sum of its proper divisors (9104652703882).

12221010021122 is a wasteful number, since it uses less digits than its factorization.

12221010021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7294050 (or 7294043 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12221010021122 its reverse (22112001012221), we get a palindrome (34333011033343).

The spelling of 12221010021122 in words is "twelve trillion, two hundred twenty-one billion, ten million, twenty-one thousand, one hundred twenty-two".