22155355231 has 2 divisors, whose sum is σ = 22155355232. Its totient is φ = 22155355230.

The previous prime is 22155355223. The next prime is 22155355259. The reversal of 22155355231 is 13255355122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22155355231 - 2³ = 22155355223 is a prime.

It is a super-2 number, since 2×22155355231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22155355031) 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, 11077677615 + 11077677616.

It is an arithmetic number, because the mean of its divisors is an integer number (11077677616).

Almost surely, 2^22155355231 is an apocalyptic number.

22155355231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155355231 is an equidigital number, since it uses as much as digits as its factorization.

22155355231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45000, while the sum is 34.

The spelling of 22155355231 in words is "twenty-two billion, one hundred fifty-five million, three hundred fifty-five thousand, two hundred thirty-one".