12240642122 has 4 divisors (see below), whose sum is σ = 18360963186. Its totient is φ = 6120321060.

The previous prime is 12240642097. The next prime is 12240642133. The reversal of 12240642122 is 22124604221.

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

It can be written as a sum of positive squares in only one way, i.e., 12155283001 + 85359121 = 110251^2 + 9239^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12240642091 and 12240642100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3060160529 + ... + 3060160532.

Almost surely, 2^12240642122 is an apocalyptic number.

12240642122 is a deficient number, since it is larger than the sum of its proper divisors (6120321064).

12240642122 is an equidigital number, since it uses as much as digits as its factorization.

12240642122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120321063.

The product of its (nonzero) digits is 3072, while the sum is 26.

The spelling of 12240642122 in words is "twelve billion, two hundred forty million, six hundred forty-two thousand, one hundred twenty-two".