122213139 has 4 divisors (see below), whose sum is σ = 162950856. Its totient is φ = 81475424.

The previous prime is 122213123. The next prime is 122213173. The reversal of 122213139 is 931312221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122213139 - 2⁴ = 122213123 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (122213639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20368854 + ... + 20368859.

It is an arithmetic number, because the mean of its divisors is an integer number (40737714).

Almost surely, 2^122213139 is an apocalyptic number.

122213139 is a deficient number, since it is larger than the sum of its proper divisors (40737717).

122213139 is an equidigital number, since it uses as much as digits as its factorization.

122213139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40737716.

The product of its digits is 648, while the sum is 24.

The square root of 122213139 is about 11055.0051560368. The cubic root of 122213139 is about 496.2562235725.

The spelling of 122213139 in words is "one hundred twenty-two million, two hundred thirteen thousand, one hundred thirty-nine".