12240222020 has 48 divisors (see below), whose sum is σ = 29310080688. Its totient is φ = 4253614080.

The previous prime is 12240222019. The next prime is 12240222077. The reversal of 12240222020 is 2022204221.

It can be written as a sum of positive squares in 8 ways, for example, as 1361314816 + 10878907204 = 36896^2 + 104302^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12240222020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1380221 + ... + 1389060.

It is an arithmetic number, because the mean of its divisors is an integer number (610626681).

Almost surely, 2^12240222020 is an apocalyptic number.

12240222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12240222020 is an abundant number, since it is smaller than the sum of its proper divisors (17069858668).

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

12240222020 is a wasteful number, since it uses less digits than its factorization.

12240222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769320 (or 2769318 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 12240222020 its reverse (2022204221), we get a palindrome (14262426241).

The spelling of 12240222020 in words is "twelve billion, two hundred forty million, two hundred twenty-two thousand, twenty".