22155202031 has 2 divisors, whose sum is σ = 22155202032. Its totient is φ = 22155202030.

The previous prime is 22155201989. The next prime is 22155202033. The reversal of 22155202031 is 13020255122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22155202031 - 2¹⁸ = 22154939887 is a prime.

It is a super-2 number, since 2×22155202031² (a number of 21 digits) contains 22 as substring.

Together with 22155202033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22155201988 and 22155202006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22155202033) 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, 11077601015 + 11077601016.

It is an arithmetic number, because the mean of its divisors is an integer number (11077601016).

Almost surely, 2^22155202031 is an apocalyptic number.

22155202031 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155202031 is an equidigital number, since it uses as much as digits as its factorization.

22155202031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 22155202031 its reverse (13020255122), we get a palindrome (35175457153).

The spelling of 22155202031 in words is "twenty-two billion, one hundred fifty-five million, two hundred two thousand, thirty-one".