12172211760 has 80 divisors (see below), whose sum is σ = 39035046240. Its totient is φ = 3133992960.

The previous prime is 12172211719. The next prime is 12172211773. The reversal of 12172211760 is 6711227121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 867481 + ... + 881400.

It is an arithmetic number, because the mean of its divisors is an integer number (487938078).

Almost surely, 2^12172211760 is an apocalyptic number.

12172211760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12172211760 is an abundant number, since it is smaller than the sum of its proper divisors (26862834480).

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

12172211760 is a wasteful number, since it uses less digits than its factorization.

12172211760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748926 (or 1748920 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 30.

Adding to 12172211760 its reverse (6711227121), we get a palindrome (18883438881).

The spelling of 12172211760 in words is "twelve billion, one hundred seventy-two million, two hundred eleven thousand, seven hundred sixty".