12155010571 has 8 divisors (see below), whose sum is σ = 13341363264. Its totient is φ = 10982216520.

The previous prime is 12155010559. The next prime is 12155010649. The reversal of 12155010571 is 17501055121.

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

It is not a de Polignac number, because 12155010571 - 2²¹ = 12152913419 is a prime.

It is a super-2 number, since 2×12155010571² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12155010071) 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, 3387781 + ... + 3391366.

It is an arithmetic number, because the mean of its divisors is an integer number (1667670408).

Almost surely, 2^12155010571 is an apocalyptic number.

12155010571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12155010571 is a deficient number, since it is larger than the sum of its proper divisors (1186352693).

12155010571 is a wasteful number, since it uses less digits than its factorization.

12155010571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6779321.

The product of its (nonzero) digits is 1750, while the sum is 28.

Adding to 12155010571 its reverse (17501055121), we get a palindrome (29656065692).

The spelling of 12155010571 in words is "twelve billion, one hundred fifty-five million, ten thousand, five hundred seventy-one".