121321252337 has 4 divisors (see below), whose sum is σ = 121772260980. Its totient is φ = 120870243696.

The previous prime is 121321252331. The next prime is 121321252363. The reversal of 121321252337 is 733252123121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 733252123121 = 7 ⋅104750303303.

It can be written as a sum of positive squares in 2 ways, for example, as 27290709601 + 94030542736 = 165199^2 + 306644^2 .

It is a cyclic number.

It is not a de Polignac number, because 121321252337 - 2¹² = 121321248241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121321252331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225503918 + ... + 225504455.

It is an arithmetic number, because the mean of its divisors is an integer number (30443065245).

Almost surely, 2^121321252337 is an apocalyptic number.

It is an amenable number.

121321252337 is a deficient number, since it is larger than the sum of its proper divisors (451008643).

121321252337 is an equidigital number, since it uses as much as digits as its factorization.

121321252337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451008642.

The product of its digits is 15120, while the sum is 32.

Adding to 121321252337 its reverse (733252123121), we get a palindrome (854573375458).

The spelling of 121321252337 in words is "one hundred twenty-one billion, three hundred twenty-one million, two hundred fifty-two thousand, three hundred thirty-seven".