12456206220 has 24 divisors (see below), whose sum is σ = 34877377584. Its totient is φ = 3321654976.

The previous prime is 12456206171. The next prime is 12456206261. The reversal of 12456206220 is 2260265421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103801659 + ... + 103801778.

It is an arithmetic number, because the mean of its divisors is an integer number (1453224066).

Almost surely, 2^12456206220 is an apocalyptic number.

12456206220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12456206220 is an abundant number, since it is smaller than the sum of its proper divisors (22421171364).

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

12456206220 is a wasteful number, since it uses less digits than its factorization.

12456206220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207603449 (or 207603447 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 12456206220 in words is "twelve billion, four hundred fifty-six million, two hundred six thousand, two hundred twenty".