12151413021 has 12 divisors (see below), whose sum is σ = 17808682976. Its totient is φ = 7364492520.

The previous prime is 12151413011. The next prime is 12151413097. The reversal of 12151413021 is 12031415121.

It is not a de Polignac number, because 12151413021 - 2¹⁷ = 12151281949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151413011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16737121 + ... + 16737846.

Almost surely, 2^12151413021 is an apocalyptic number.

12151413021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12151413021 is a deficient number, since it is larger than the sum of its proper divisors (5657269955).

12151413021 is a wasteful number, since it uses less digits than its factorization.

12151413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33474992 (or 33474981 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 12151413021 its reverse (12031415121), we get a palindrome (24182828142).

The spelling of 12151413021 in words is "twelve billion, one hundred fifty-one million, four hundred thirteen thousand, twenty-one".