12227579402 has 4 divisors (see below), whose sum is σ = 18341369106. Its totient is φ = 6113789700.

The previous prime is 12227579393. The next prime is 12227579411. The reversal of 12227579402 is 20497572221.

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

It is an interprime number because it is at equal distance from previous prime (12227579393) and next prime (12227579411).

It can be written as a sum of positive squares in only one way, i.e., 10404204001 + 1823375401 = 102001^2 + 42701^2 .

It is a super-3 number, since 3×12227579402³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12227579402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3056894849 + ... + 3056894852.

Almost surely, 2^12227579402 is an apocalyptic number.

12227579402 is a deficient number, since it is larger than the sum of its proper divisors (6113789704).

12227579402 is an equidigital number, since it uses as much as digits as its factorization.

12227579402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6113789703.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 12227579402 in words is "twelve billion, two hundred twenty-seven million, five hundred seventy-nine thousand, four hundred two".