12277210172 has 12 divisors (see below), whose sum is σ = 21849272760. Its totient is φ = 6034560816.

The previous prime is 12277210171. The next prime is 12277210177. The reversal of 12277210172 is 27101277221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277210171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26010803 + ... + 26011274.

It is an arithmetic number, because the mean of its divisors is an integer number (1820772730).

Almost surely, 2^12277210172 is an apocalyptic number.

It is an amenable number.

12277210172 is a deficient number, since it is larger than the sum of its proper divisors (9572062588).

12277210172 is a wasteful number, since it uses less digits than its factorization.

12277210172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52022140 (or 52022138 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

Adding to 12277210172 its reverse (27101277221), we get a palindrome (39378487393).

The spelling of 12277210172 in words is "twelve billion, two hundred seventy-seven million, two hundred ten thousand, one hundred seventy-two".