122336639 has 2 divisors, whose sum is σ = 122336640. Its totient is φ = 122336638.

The previous prime is 122336597. The next prime is 122336657. The reversal of 122336639 is 936633221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122336639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122336599 and 122336608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122336699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61168319 + 61168320.

It is an arithmetic number, because the mean of its divisors is an integer number (61168320).

Almost surely, 2^122336639 is an apocalyptic number.

122336639 is a deficient number, since it is larger than the sum of its proper divisors (1).

122336639 is an equidigital number, since it uses as much as digits as its factorization.

122336639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The square root of 122336639 is about 11060.5894508385. The cubic root of 122336639 is about 496.4233278390.

The spelling of 122336639 in words is "one hundred twenty-two million, three hundred thirty-six thousand, six hundred thirty-nine".