22138010921949 has 32 divisors (see below), whose sum is σ = 32816550273024. Its totient is φ = 13182633109440.

The previous prime is 22138010921947. The next prime is 22138010921987. The reversal of 22138010921949 is 94912901083122.

It is not a de Polignac number, because 22138010921949 - 2¹ = 22138010921947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22138010921947) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11495142 + ... + 13282104.

It is an arithmetic number, because the mean of its divisors is an integer number (1025517196032).

Almost surely, 2^{22138010921949} is an apocalyptic number.

It is an amenable number.

22138010921949 is a deficient number, since it is larger than the sum of its proper divisors (10678539351075).

22138010921949 is a wasteful number, since it uses less digits than its factorization.

22138010921949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797257.

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 22138010921949 in words is "twenty-two trillion, one hundred thirty-eight billion, ten million, nine hundred twenty-one thousand, nine hundred forty-nine".