12274278220 has 48 divisors (see below), whose sum is σ = 26009883648. Its totient is φ = 4865253120.

The previous prime is 12274278197. The next prime is 12274278223. The reversal of 12274278220 is 2287247221.

It is a self number, because there is not a number n which added to its sum of digits gives 12274278220.

It is not an unprimeable number, because it can be changed into a prime (12274278223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2590974 + ... + 2595706.

It is an arithmetic number, because the mean of its divisors is an integer number (541872576).

Almost surely, 2^12274278220 is an apocalyptic number.

12274278220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12274278220 is an abundant number, since it is smaller than the sum of its proper divisors (13735605428).

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

12274278220 is a wasteful number, since it uses less digits than its factorization.

12274278220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5890 (or 5888 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 37.

The spelling of 12274278220 in words is "twelve billion, two hundred seventy-four million, two hundred seventy-eight thousand, two hundred twenty".