7351252121 has 4 divisors (see below), whose sum is σ = 7389740544. Its totient is φ = 7312763700.

The previous prime is 7351252109. The next prime is 7351252123. The reversal of 7351252121 is 1212521537.

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 a de Polignac number, because none of the positive numbers 2^k-7351252121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7351252123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19243925 + ... + 19244306.

It is an arithmetic number, because the mean of its divisors is an integer number (1847435136).

Almost surely, 2^7351252121 is an apocalyptic number.

It is an amenable number.

7351252121 is a deficient number, since it is larger than the sum of its proper divisors (38488423).

7351252121 is a wasteful number, since it uses less digits than its factorization.

7351252121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38488422.

The product of its digits is 4200, while the sum is 29.

The square root of 7351252121 is about 85739.4432043969. The cubic root of 7351252121 is about 1944.4066866390.

Adding to 7351252121 its reverse (1212521537), we get a palindrome (8563773658).

The spelling of 7351252121 in words is "seven billion, three hundred fifty-one million, two hundred fifty-two thousand, one hundred twenty-one".