22215054397 has 2 divisors, whose sum is σ = 22215054398. Its totient is φ = 22215054396.

The previous prime is 22215054383. The next prime is 22215054403. The reversal of 22215054397 is 79345051222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11579051236 + 10636003161 = 107606^2 + 103131^2 .

It is a cyclic number.

It is not a de Polignac number, because 22215054397 - 2¹⁹ = 22214530109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22215054347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107527198 + 11107527199.

It is an arithmetic number, because the mean of its divisors is an integer number (11107527199).

Almost surely, 2^22215054397 is an apocalyptic number.

It is an amenable number.

22215054397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22215054397 is an equidigital number, since it uses as much as digits as its factorization.

22215054397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 22215054397 in words is "twenty-two billion, two hundred fifteen million, fifty-four thousand, three hundred ninety-seven".