12220079 has 4 divisors (see below), whose sum is σ = 12228840. Its totient is φ = 12211320.

The previous prime is 12220037. The next prime is 12220081. The reversal of 12220079 is 97002221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97002221 = 17 ⋅5706013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12220079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1769 + ... + 5250.

It is an arithmetic number, because the mean of its divisors is an integer number (3057210).

Almost surely, 2^12220079 is an apocalyptic number.

12220079 is a deficient number, since it is larger than the sum of its proper divisors (8761).

12220079 is an equidigital number, since it uses as much as digits as its factorization.

12220079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 12220079 is about 3495.7229581304. The cubic root of 12220079 is about 230.3339760564. Note that the first 3 decimals are identical.

The spelling of 12220079 in words is "twelve million, two hundred twenty thousand, seventy-nine".