122113391 has 2 divisors, whose sum is σ = 122113392. Its totient is φ = 122113390.

The previous prime is 122113373. The next prime is 122113423. The reversal of 122113391 is 193311221.

It is a weak prime.

It is an emirp because it is prime and its reverse (193311221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122113391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122113331) 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, 61056695 + 61056696.

It is an arithmetic number, because the mean of its divisors is an integer number (61056696).

Almost surely, 2^122113391 is an apocalyptic number.

122113391 is a deficient number, since it is larger than the sum of its proper divisors (1).

122113391 is an equidigital number, since it uses as much as digits as its factorization.

122113391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 23.

The square root of 122113391 is about 11050.4927944413. The cubic root of 122113391 is about 496.1211752478.

The spelling of 122113391 in words is "one hundred twenty-two million, one hundred thirteen thousand, three hundred ninety-one".