122299678 has 4 divisors (see below), whose sum is σ = 183449520. Its totient is φ = 61149838.

The previous prime is 122299669. The next prime is 122299711. The reversal of 122299678 is 876992221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 876992221 = 7 ⋅125284603.

It is a super-2 number, since 2×122299678² = 29914422477807368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 30574918 + ... + 30574921.

It is an arithmetic number, because the mean of its divisors is an integer number (45862380).

Almost surely, 2^122299678 is an apocalyptic number.

122299678 is a deficient number, since it is larger than the sum of its proper divisors (61149842).

122299678 is an equidigital number, since it uses as much as digits as its factorization.

122299678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61149841.

The product of its digits is 217728, while the sum is 46.

The square root of 122299678 is about 11058.9184823833. The cubic root of 122299678 is about 496.3733287793.

The spelling of 122299678 in words is "one hundred twenty-two million, two hundred ninety-nine thousand, six hundred seventy-eight".