22387138974621 has 24 divisors (see below), whose sum is σ = 33033848440320. Its totient is φ = 14603297220576.

The previous prime is 22387138974583. The next prime is 22387138974643. The reversal of 22387138974621 is 12647983178322.

It is a happy number.

22387138974621 is a `hidden beast` number, since 2 + 2 + 3 + 87 + 1 + 3 + 8 + 97 + 462 + 1 = 666.

It is not a de Polignac number, because 22387138974621 - 2¹⁴ = 22387138958237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22387138974661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5509701 + ... + 8667818.

It is an arithmetic number, because the mean of its divisors is an integer number (1376410351680).

Almost surely, 2^{22387138974621} is an apocalyptic number.

It is an amenable number.

22387138974621 is a deficient number, since it is larger than the sum of its proper divisors (10646709465699).

22387138974621 is a wasteful number, since it uses less digits than its factorization.

22387138974621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181305 (or 14181302 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 22387138974621 in words is "twenty-two trillion, three hundred eighty-seven billion, one hundred thirty-eight million, nine hundred seventy-four thousand, six hundred twenty-one".