12221601507 has 6 divisors (see below), whose sum is σ = 17653424412. Its totient is φ = 8147734332.

The previous prime is 12221601499. The next prime is 12221601577. The reversal of 12221601507 is 70510612221.

12221601507 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 1 + 601 + 50 + 7 = 666.

It is not a de Polignac number, because 12221601507 - 2³ = 12221601499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12221601577) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678977853 + ... + 678977870.

It is an arithmetic number, because the mean of its divisors is an integer number (2942237402).

Almost surely, 2^12221601507 is an apocalyptic number.

12221601507 is a deficient number, since it is larger than the sum of its proper divisors (5431822905).

12221601507 is a wasteful number, since it uses less digits than its factorization.

12221601507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357955729 (or 1357955726 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The spelling of 12221601507 in words is "twelve billion, two hundred twenty-one million, six hundred one thousand, five hundred seven".