12220102172 has 6 divisors (see below), whose sum is σ = 21385178808. Its totient is φ = 6110051084.

The previous prime is 12220102171. The next prime is 12220102177. The reversal of 12220102172 is 27120102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220102171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527512768 + ... + 1527512775.

It is an arithmetic number, because the mean of its divisors is an integer number (3564196468).

Almost surely, 2^12220102172 is an apocalyptic number.

It is an amenable number.

12220102172 is a deficient number, since it is larger than the sum of its proper divisors (9165076636).

12220102172 is a wasteful number, since it uses less digits than its factorization.

12220102172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055025547 (or 3055025545 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 12220102172 its reverse (27120102221), we get a palindrome (39340204393).

The spelling of 12220102172 in words is "twelve billion, two hundred twenty million, one hundred two thousand, one hundred seventy-two".