12231121022220 has 48 divisors (see below), whose sum is σ = 34256794699008. Its totient is φ = 3260712669120.

The previous prime is 12231121022203. The next prime is 12231121022231. The reversal of 12231121022220 is 2222012113221.

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, 28523016 + ... + 28948655.

It is an arithmetic number, because the mean of its divisors is an integer number (713683222896).

Almost surely, 2^{12231121022220} is an apocalyptic number.

12231121022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12231121022220 is an abundant number, since it is smaller than the sum of its proper divisors (22025673676788).

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

12231121022220 is a wasteful number, since it uses less digits than its factorization.

12231121022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57475230 (or 57475228 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12231121022220 its reverse (2222012113221), we get a palindrome (14453133135441).

The spelling of 12231121022220 in words is "twelve trillion, two hundred thirty-one billion, one hundred twenty-one million, twenty-two thousand, two hundred twenty".