22404131220397 has 2 divisors, whose sum is σ = 22404131220398. Its totient is φ = 22404131220396.

The previous prime is 22404131220293. The next prime is 22404131220467. The reversal of 22404131220397 is 79302213140422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19389702583876 + 3014428636521 = 4403374^2 + 1736211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22404131220397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22404131220997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202065610198 + 11202065610199.

It is an arithmetic number, because the mean of its divisors is an integer number (11202065610199).

Almost surely, 2^{22404131220397} is an apocalyptic number.

It is an amenable number.

22404131220397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22404131220397 is an equidigital number, since it uses as much as digits as its factorization.

22404131220397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 22404131220397 in words is "twenty-two trillion, four hundred four billion, one hundred thirty-one million, two hundred twenty thousand, three hundred ninety-seven".