122204639 has 2 divisors, whose sum is σ = 122204640. Its totient is φ = 122204638.

The previous prime is 122204633. The next prime is 122204689. The reversal of 122204639 is 936402221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122204639 - 2⁴ = 122204623 is a prime.

It is equal to p_6960035 and since 122204639 and 6960035 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122204633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61102319 + 61102320.

It is an arithmetic number, because the mean of its divisors is an integer number (61102320).

Almost surely, 2^122204639 is an apocalyptic number.

122204639 is a deficient number, since it is larger than the sum of its proper divisors (1).

122204639 is an equidigital number, since it uses as much as digits as its factorization.

122204639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 122204639 is about 11054.6207081021. The cubic root of 122204639 is about 496.2447183292.

The spelling of 122204639 in words is "one hundred twenty-two million, two hundred four thousand, six hundred thirty-nine".