22155193811 has 2 divisors, whose sum is σ = 22155193812. Its totient is φ = 22155193810.

The previous prime is 22155193799. The next prime is 22155193813. The reversal of 22155193811 is 11839155122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22155193811 is a prime.

It is a super-2 number, since 2×22155193811² (a number of 21 digits) contains 22 as substring.

Together with 22155193813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22155193813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11077596905 + 11077596906.

It is an arithmetic number, because the mean of its divisors is an integer number (11077596906).

Almost surely, 2^22155193811 is an apocalyptic number.

22155193811 is a deficient number, since it is larger than the sum of its proper divisors (1).

22155193811 is an equidigital number, since it uses as much as digits as its factorization.

22155193811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 38.

The spelling of 22155193811 in words is "twenty-two billion, one hundred fifty-five million, one hundred ninety-three thousand, eight hundred eleven".