12121025053 has 4 divisors (see below), whose sum is σ = 12758973760. Its totient is φ = 11483076348.

The previous prime is 12121025051. The next prime is 12121025057. The reversal of 12121025053 is 35052012121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12121025053 - 2¹ = 12121025051 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 (12121025051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318974325 + ... + 318974362.

It is an arithmetic number, because the mean of its divisors is an integer number (3189743440).

Almost surely, 2^12121025053 is an apocalyptic number.

It is an amenable number.

12121025053 is a deficient number, since it is larger than the sum of its proper divisors (637948707).

12121025053 is an equidigital number, since it uses as much as digits as its factorization.

12121025053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637948706.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 12121025053 its reverse (35052012121), we get a palindrome (47173037174).

The spelling of 12121025053 in words is "twelve billion, one hundred twenty-one million, twenty-five thousand, fifty-three".