12212715465 has 40 divisors (see below), whose sum is σ = 22169600640. Its totient is φ = 6430982688.

The previous prime is 12212715461. The next prime is 12212715479. The reversal of 12212715465 is 56451721221.

12212715465 is a `hidden beast` number, since 122 + 1 + 2 + 71 + 5 + 465 = 666.

It is not a de Polignac number, because 12212715465 - 2² = 12212715461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12212715461) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 158859 + ... + 222848.

It is an arithmetic number, because the mean of its divisors is an integer number (554240016).

Almost surely, 2^12212715465 is an apocalyptic number.

12212715465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12212715465 is a deficient number, since it is larger than the sum of its proper divisors (9956885175).

12212715465 is an equidigital number, since it uses as much as digits as its factorization.

12212715465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381803 (or 381794 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The spelling of 12212715465 in words is "twelve billion, two hundred twelve million, seven hundred fifteen thousand, four hundred sixty-five".