12121331453 has 48 divisors (see below), whose sum is σ = 15929561088. Its totient is φ = 9011402400.

The previous prime is 12121331423. The next prime is 12121331459. The reversal of 12121331453 is 35413312121.

It is not a de Polignac number, because 12121331453 - 2¹⁶ = 12121265917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121331459) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13305068 + ... + 13305978.

It is an arithmetic number, because the mean of its divisors is an integer number (331865856).

Almost surely, 2^12121331453 is an apocalyptic number.

It is an amenable number.

12121331453 is a deficient number, since it is larger than the sum of its proper divisors (3808229635).

12121331453 is a wasteful number, since it uses less digits than its factorization.

12121331453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646 (or 1635 counting only the distinct ones).

The product of its digits is 2160, while the sum is 26.

Adding to 12121331453 its reverse (35413312121), we get a palindrome (47534643574).

The spelling of 12121331453 in words is "twelve billion, one hundred twenty-one million, three hundred thirty-one thousand, four hundred fifty-three".