12155466688220 has 12 divisors (see below), whose sum is σ = 25526480045304. Its totient is φ = 4862186675280.

The previous prime is 12155466688213. The next prime is 12155466688241. The reversal of 12155466688220 is 2288666455121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303886667186 + ... + 303886667225.

It is an arithmetic number, because the mean of its divisors is an integer number (2127206670442).

Almost surely, 2^{12155466688220} is an apocalyptic number.

12155466688220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12155466688220 is an abundant number, since it is smaller than the sum of its proper divisors (13371013357084).

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

12155466688220 is a wasteful number, since it uses less digits than its factorization.

12155466688220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607773334420 (or 607773334418 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 56.

The spelling of 12155466688220 in words is "twelve trillion, one hundred fifty-five billion, four hundred sixty-six million, six hundred eighty-eight thousand, two hundred twenty".