12210220164 has 24 divisors (see below), whose sum is σ = 28915747168. Its totient is φ = 4009325760.

The previous prime is 12210220163. The next prime is 12210220219. The reversal of 12210220164 is 46102201221.

It is a self number, because there is not a number n which added to its sum of digits gives 12210220164.

It is not an unprimeable number, because it can be changed into a prime (12210220163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7592617 + ... + 7594224.

Almost surely, 2^12210220164 is an apocalyptic number.

It is an amenable number.

12210220164 is an abundant number, since it is smaller than the sum of its proper divisors (16705527004).

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

12210220164 is a wasteful number, since it uses less digits than its factorization.

12210220164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15186915 (or 15186913 counting only the distinct ones).

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

Adding to 12210220164 its reverse (46102201221), we get a palindrome (58312421385).

The spelling of 12210220164 in words is "twelve billion, two hundred ten million, two hundred twenty thousand, one hundred sixty-four".