12153115221 has 8 divisors (see below), whose sum is σ = 17450627040. Its totient is φ = 7478840112.

The previous prime is 12153115187. The next prime is 12153115229. The reversal of 12153115221 is 12251135121.

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

It is not a de Polignac number, because 12153115221 - 2⁶ = 12153115157 is a prime.

It is a super-4 number, since 4×12153115221⁴ (a number of 41 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12153115191 and 12153115200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12153115229) 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, 155809131 + ... + 155809208.

It is an arithmetic number, because the mean of its divisors is an integer number (2181328380).

Almost surely, 2^12153115221 is an apocalyptic number.

It is an amenable number.

12153115221 is a deficient number, since it is larger than the sum of its proper divisors (5297511819).

12153115221 is a wasteful number, since it uses less digits than its factorization.

12153115221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311618355.

The product of its digits is 600, while the sum is 24.

The spelling of 12153115221 in words is "twelve billion, one hundred fifty-three million, one hundred fifteen thousand, two hundred twenty-one".