22140098900921 has 2 divisors, whose sum is σ = 22140098900922. Its totient is φ = 22140098900920.

The previous prime is 22140098900861. The next prime is 22140098900947. The reversal of 22140098900921 is 12900989004122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21392142026896 + 747956874025 = 4625164^2 + 864845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22140098900921 is a prime.

It is a super-4 number, since 4×22140098900921⁴ (a number of 54 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (22140098905921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070049450460 + 11070049450461.

It is an arithmetic number, because the mean of its divisors is an integer number (11070049450461).

Almost surely, 2^{22140098900921} is an apocalyptic number.

It is an amenable number.

22140098900921 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140098900921 is an equidigital number, since it uses as much as digits as its factorization.

22140098900921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 22140098900921 in words is "twenty-two trillion, one hundred forty billion, ninety-eight million, nine hundred thousand, nine hundred twenty-one".