12164944220 has 48 divisors (see below), whose sum is σ = 30012540768. Its totient is φ = 4083336960.

The previous prime is 12164944217. The next prime is 12164944223. The reversal of 12164944220 is 2244946121.

It is an interprime number because it is at equal distance from previous prime (12164944217) and next prime (12164944223).

It is a super-2 number, since 2×12164944220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12164944223) 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, 2123879 + ... + 2129598.

It is an arithmetic number, because the mean of its divisors is an integer number (625261266).

Almost surely, 2^12164944220 is an apocalyptic number.

12164944220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12164944220 is an abundant number, since it is smaller than the sum of its proper divisors (17847596548).

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

12164944220 is a wasteful number, since it uses less digits than its factorization.

12164944220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253510 (or 4253508 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 12164944220 in words is "twelve billion, one hundred sixty-four million, nine hundred forty-four thousand, two hundred twenty".