122155723 has 2 divisors, whose sum is σ = 122155724. Its totient is φ = 122155722.

The previous prime is 122155681. The next prime is 122155729. The reversal of 122155723 is 327551221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122155723 - 2²⁵ = 88601291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122155691 and 122155700.

It is not a weakly prime, because it can be changed into another prime (122155729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61077861 + 61077862.

It is an arithmetic number, because the mean of its divisors is an integer number (61077862).

Almost surely, 2^122155723 is an apocalyptic number.

122155723 is a deficient number, since it is larger than the sum of its proper divisors (1).

122155723 is an equidigital number, since it uses as much as digits as its factorization.

122155723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 122155723 is about 11052.4080181651. The cubic root of 122155723 is about 496.1784973128.

The spelling of 122155723 in words is "one hundred twenty-two million, one hundred fifty-five thousand, seven hundred twenty-three".