122190839 has 2 divisors, whose sum is σ = 122190840. Its totient is φ = 122190838.

The previous prime is 122190799. The next prime is 122190847. The reversal of 122190839 is 938091221.

It is a strong prime.

It is an emirp because it is prime and its reverse (938091221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122190839 - 2⁸ = 122190583 is a prime.

It is a super-2 number, since 2×122190839² = 29861202271047842, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122190799 and 122190808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122190899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61095419 + 61095420.

It is an arithmetic number, because the mean of its divisors is an integer number (61095420).

Almost surely, 2^122190839 is an apocalyptic number.

122190839 is a deficient number, since it is larger than the sum of its proper divisors (1).

122190839 is an equidigital number, since it uses as much as digits as its factorization.

122190839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 122190839 is about 11053.9965170973. The cubic root of 122190839 is about 496.2260380920.

The spelling of 122190839 in words is "one hundred twenty-two million, one hundred ninety thousand, eight hundred thirty-nine".