12015612722251 has 8 divisors (see below), whose sum is σ = 12108083130000. Its totient is φ = 11923153650720.

The previous prime is 12015612722207. The next prime is 12015612722317. The reversal of 12015612722251 is 15222721651021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12015612722251 - 2¹⁷ = 12015612591179 is a prime.

It is a super-2 number, since 2×12015612722251² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12015612722251.

It is not an unprimeable number, because it can be changed into a prime (12015612722551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 699876 + ... + 4951873.

It is an arithmetic number, because the mean of its divisors is an integer number (1513510391250).

Almost surely, 2^{12015612722251} is an apocalyptic number.

12015612722251 is a deficient number, since it is larger than the sum of its proper divisors (92470407749).

12015612722251 is a wasteful number, since it uses less digits than its factorization.

12015612722251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5668109.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 12015612722251 in words is "twelve trillion, fifteen billion, six hundred twelve million, seven hundred twenty-two thousand, two hundred fifty-one".