12270490236 has 18 divisors (see below), whose sum is σ = 31017072632. Its totient is φ = 4090163400.

The previous prime is 12270490229. The next prime is 12270490241. The reversal of 12270490236 is 63209407221.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 340846951 = 12270490236 / (1 + 2 + 2 + 7 + 0 + 4 + 9 + 0 + 2 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 12270490236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170423440 + ... + 170423511.

Almost surely, 2^12270490236 is an apocalyptic number.

It is an amenable number.

12270490236 is an abundant number, since it is smaller than the sum of its proper divisors (18746582396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12270490236 is a wasteful number, since it uses less digits than its factorization.

12270490236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340846961 (or 340846956 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

Adding to 12270490236 its reverse (63209407221), we get a palindrome (75479897457).

The spelling of 12270490236 in words is "twelve billion, two hundred seventy million, four hundred ninety thousand, two hundred thirty-six".