12020501151 has 24 divisors (see below), whose sum is σ = 18480593664. Its totient is φ = 7502768640.

The previous prime is 12020501149. The next prime is 12020501153. The reversal of 12020501151 is 15110502021.

12020501151 is a `hidden beast` number, since 12 + 0 + 2 + 0 + 501 + 151 = 666.

It is an interprime number because it is at equal distance from previous prime (12020501149) and next prime (12020501153).

It is not a de Polignac number, because 12020501151 - 2¹ = 12020501149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020501153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176446 + ... + 234891.

It is an arithmetic number, because the mean of its divisors is an integer number (770024736).

Almost surely, 2^12020501151 is an apocalyptic number.

12020501151 is a deficient number, since it is larger than the sum of its proper divisors (6460092513).

12020501151 is a wasteful number, since it uses less digits than its factorization.

12020501151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411551 (or 411548 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The spelling of 12020501151 in words is "twelve billion, twenty million, five hundred one thousand, one hundred fifty-one".