22402240397 has 2 divisors, whose sum is σ = 22402240398. Its totient is φ = 22402240396.

The previous prime is 22402240381. The next prime is 22402240403. The reversal of 22402240397 is 79304220422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14088265636 + 8313974761 = 118694^2 + 91181^2 .

It is a cyclic number.

It is not a de Polignac number, because 22402240397 - 2⁴ = 22402240381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22402240697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11201120198 + 11201120199.

It is an arithmetic number, because the mean of its divisors is an integer number (11201120199).

Almost surely, 2^22402240397 is an apocalyptic number.

It is an amenable number.

22402240397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22402240397 is an equidigital number, since it uses as much as digits as its factorization.

22402240397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 22402240397 in words is "twenty-two billion, four hundred two million, two hundred forty thousand, three hundred ninety-seven".