22121887793441 has 2 divisors, whose sum is σ = 22121887793442. Its totient is φ = 22121887793440.

The previous prime is 22121887793353. The next prime is 22121887793497. The reversal of 22121887793441 is 14439778812122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16970445030400 + 5151442763041 = 4119520^2 + 2269679^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121887793441 is a prime.

It is not a weakly prime, because it can be changed into another prime (22121887093441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060943896720 + 11060943896721.

It is an arithmetic number, because the mean of its divisors is an integer number (11060943896721).

Almost surely, 2^{22121887793441} is an apocalyptic number.

It is an amenable number.

22121887793441 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121887793441 is an equidigital number, since it uses as much as digits as its factorization.

22121887793441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10838016, while the sum is 59.

The spelling of 22121887793441 in words is "twenty-two trillion, one hundred twenty-one billion, eight hundred eighty-seven million, seven hundred ninety-three thousand, four hundred forty-one".