12151331055 has 24 divisors (see below), whose sum is σ = 21065494320. Its totient is φ = 6479729280.

The previous prime is 12151331047. The next prime is 12151331063. The reversal of 12151331055 is 55013315121.

It is an interprime number because it is at equal distance from previous prime (12151331047) and next prime (12151331063).

It is not a de Polignac number, because 12151331055 - 2³ = 12151331047 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 356811 + ... + 389379.

It is an arithmetic number, because the mean of its divisors is an integer number (877728930).

Almost surely, 2^12151331055 is an apocalyptic number.

12151331055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12151331055 is a deficient number, since it is larger than the sum of its proper divisors (8914163265).

12151331055 is a wasteful number, since it uses less digits than its factorization.

12151331055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40871 (or 40868 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 12151331055 its reverse (55013315121), we get a palindrome (67164646176).

It can be divided in two parts, 12151 and 331055, that added together give a triangular number (343206 = T₈₂₈).

The spelling of 12151331055 in words is "twelve billion, one hundred fifty-one million, three hundred thirty-one thousand, fifty-five".