12221274867452 has 24 divisors (see below), whose sum is σ = 24449452658400. Its totient is φ = 5236210031040.

The previous prime is 12221274867427. The next prime is 12221274867517. The reversal of 12221274867452 is 25476847212221.

It is a junction number, because it is equal to n+sod(n) for n = 12221274867394 and 12221274867403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61532327 + ... + 61730622.

It is an arithmetic number, because the mean of its divisors is an integer number (1018727194100).

Almost surely, 2^{12221274867452} is an apocalyptic number.

It is an amenable number.

12221274867452 is an abundant number, since it is smaller than the sum of its proper divisors (12228177790948).

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

12221274867452 is a wasteful number, since it uses less digits than its factorization.

12221274867452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123266501 (or 123266499 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 53.

The spelling of 12221274867452 in words is "twelve trillion, two hundred twenty-one billion, two hundred seventy-four million, eight hundred sixty-seven thousand, four hundred fifty-two".