12167215740 has 120 divisors (see below), whose sum is σ = 39828650400. Its totient is φ = 3103512192.

The previous prime is 12167215729. The next prime is 12167215751. The reversal of 12167215740 is 4751276121.

12167215740 is a `hidden beast` number, since 1 + 2 + 1 + 67 + 21 + 574 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (12167215729) and next prime (12167215751).

It is a super-2 number, since 2×12167215740² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12167215695 and 12167215704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 126015 + ... + 200534.

It is an arithmetic number, because the mean of its divisors is an integer number (331905420).

Almost surely, 2^12167215740 is an apocalyptic number.

12167215740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12167215740 is an abundant number, since it is smaller than the sum of its proper divisors (27661434660).

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

12167215740 is a wasteful number, since it uses less digits than its factorization.

12167215740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326593 (or 326582 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The spelling of 12167215740 in words is "twelve billion, one hundred sixty-seven million, two hundred fifteen thousand, seven hundred forty".