7372152121 has 2 divisors, whose sum is σ = 7372152122. Its totient is φ = 7372152120.

The previous prime is 7372152091. The next prime is 7372152127. The reversal of 7372152121 is 1212512737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7371939600 + 212521 = 85860^2 + 461^2 .

It is a cyclic number.

It is not a de Polignac number, because 7372152121 - 2⁷ = 7372151993 is a prime.

It is not a weakly prime, because it can be changed into another prime (7372152127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3686076060 + 3686076061.

It is an arithmetic number, because the mean of its divisors is an integer number (3686076061).

Almost surely, 2^7372152121 is an apocalyptic number.

It is an amenable number.

7372152121 is a deficient number, since it is larger than the sum of its proper divisors (1).

7372152121 is an equidigital number, since it uses as much as digits as its factorization.

7372152121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5880, while the sum is 31.

The square root of 7372152121 is about 85861.2375929907. The cubic root of 7372152121 is about 1946.2476269172.

Adding to 7372152121 its reverse (1212512737), we get a palindrome (8584664858).

The spelling of 7372152121 in words is "seven billion, three hundred seventy-two million, one hundred fifty-two thousand, one hundred twenty-one".