372516711221 has 4 divisors (see below), whose sum is σ = 372561316332. Its totient is φ = 372472106112.

The previous prime is 372516711209. The next prime is 372516711271. The reversal of 372516711221 is 122117615273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122117615273 = 1709 ⋅71455597.

It can be written as a sum of positive squares in 2 ways, for example, as 132269688721 + 240247022500 = 363689^2 + 490150^2 .

It is a cyclic number.

It is not a de Polignac number, because 372516711221 - 2³⁰ = 371442969397 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 (372516711271) 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, 22290026 + ... + 22306731.

It is an arithmetic number, because the mean of its divisors is an integer number (93140329083).

Almost surely, 2^372516711221 is an apocalyptic number.

It is an amenable number.

372516711221 is a deficient number, since it is larger than the sum of its proper divisors (44605111).

372516711221 is an equidigital number, since it uses as much as digits as its factorization.

372516711221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44605110.

The product of its digits is 35280, while the sum is 38.

The spelling of 372516711221 in words is "three hundred seventy-two billion, five hundred sixteen million, seven hundred eleven thousand, two hundred twenty-one".