12121144351252 has 12 divisors (see below), whose sum is σ = 21896260763776. Its totient is φ = 5865069847320.

The previous prime is 12121144351237. The next prime is 12121144351271. The reversal of 12121144351252 is 25215344112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48875581938 + ... + 48875582185.

Almost surely, 2^{12121144351252} is an apocalyptic number.

It is an amenable number.

12121144351252 is a deficient number, since it is larger than the sum of its proper divisors (9775116412524).

12121144351252 is a wasteful number, since it uses less digits than its factorization.

12121144351252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97751164158 (or 97751164156 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

Adding to 12121144351252 its reverse (25215344112121), we get a palindrome (37336488463373).

The spelling of 12121144351252 in words is "twelve trillion, one hundred twenty-one billion, one hundred forty-four million, three hundred fifty-one thousand, two hundred fifty-two".