122212139 has 8 divisors (see below), whose sum is σ = 139741440. Its totient is φ = 104700456.

The previous prime is 122212093. The next prime is 122212141. The reversal of 122212139 is 931212221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122212139 - 2⁸ = 122211883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122212159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18242 + ... + 24024.

It is an arithmetic number, because the mean of its divisors is an integer number (17467680).

Almost surely, 2^122212139 is an apocalyptic number.

122212139 is a deficient number, since it is larger than the sum of its proper divisors (17529301).

122212139 is an equidigital number, since it uses as much as digits as its factorization.

122212139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8809.

The product of its digits is 432, while the sum is 23.

The square root of 122212139 is about 11054.9599275619. The cubic root of 122212139 is about 496.2548700421.

The spelling of 122212139 in words is "one hundred twenty-two million, two hundred twelve thousand, one hundred thirty-nine".