12212122022122 has 12 divisors (see below), whose sum is σ = 20134862342658. Its totient is φ = 5550964555400.

The previous prime is 12212122022119. The next prime is 12212122022189. The reversal of 12212122022122 is 22122022121221.

It can be written as a sum of positive squares in only one way, i.e., 10207635213721 + 2004486808401 = 3194939^2 + 1415799^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12212122022093 and 12212122022102.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25231656829 + ... + 25231657312.

Almost surely, 2^{12212122022122} is an apocalyptic number.

12212122022122 is a deficient number, since it is larger than the sum of its proper divisors (7922740320536).

12212122022122 is a wasteful number, since it uses less digits than its factorization.

12212122022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50463314165 (or 50463314154 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12212122022122 its reverse (22122022121221), we get a palindrome (34334144143343).

Subtracting 12212122022122 from its reverse (22122022121221), we obtain a palindrome (9909900099099).

The spelling of 12212122022122 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-two million, twenty-two thousand, one hundred twenty-two".