12157022 has 8 divisors (see below), whose sum is σ = 18823872. Its totient is φ = 5882400.

The previous prime is 12157001. The next prime is 12157027. The reversal of 12157022 is 22075121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12156985 and 12157003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97979 + ... + 98102.

It is an arithmetic number, because the mean of its divisors is an integer number (2352984).

Almost surely, 2^12157022 is an apocalyptic number.

12157022 is a deficient number, since it is larger than the sum of its proper divisors (6666850).

12157022 is a wasteful number, since it uses less digits than its factorization.

12157022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196114.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 12157022 is about 3486.6921286515. The cubic root of 12157022 is about 229.9371094590.

The spelling of 12157022 in words is "twelve million, one hundred fifty-seven thousand, twenty-two".