22155131399 has 2 divisors, whose sum is σ = 22155131400. Its totient is φ = 22155131398.

The previous prime is 22155131387. The next prime is 22155131417. The reversal of 22155131399 is 99313155122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22155131399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22155031399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077565699 + 11077565700.

It is an arithmetic number, because the mean of its divisors is an integer number (11077565700).

Almost surely, 2^22155131399 is an apocalyptic number.

22155131399 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155131399 is an equidigital number, since it uses as much as digits as its factorization.

22155131399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 41.

The spelling of 22155131399 in words is "twenty-two billion, one hundred fifty-five million, one hundred thirty-one thousand, three hundred ninety-nine".