12293900218 has 4 divisors (see below), whose sum is σ = 18440850330. Its totient is φ = 6146950108.

The previous prime is 12293900173. The next prime is 12293900219. The reversal of 12293900218 is 81200939221.

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., 6948389449 + 5345510769 = 83357^2 + 73113^2 .

It is a super-2 number, since 2×12293900218² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12293900219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3073475053 + ... + 3073475056.

Almost surely, 2^12293900218 is an apocalyptic number.

12293900218 is a deficient number, since it is larger than the sum of its proper divisors (6146950112).

12293900218 is an equidigital number, since it uses as much as digits as its factorization.

12293900218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6146950111.

The product of its (nonzero) digits is 15552, while the sum is 37.

The spelling of 12293900218 in words is "twelve billion, two hundred ninety-three million, nine hundred thousand, two hundred eighteen".