3707122801321 has 3 divisors (see below), whose sum is σ = 3707124726711. Its totient is φ = 3707120875932.

The previous prime is 3707122801309. The next prime is 3707122801339. The reversal of 3707122801321 is 1231082217073.

The square root of 3707122801321 is 1925389.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 3107953917721 + 599168883600 = 1762939^2 + 774060^2 .

It is not a de Polignac number, because 3707122801321 - 2²⁹ = 3706585930409 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3707122801021) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 962695 + ... + 2888083.

It is an arithmetic number, because the mean of its divisors is an integer number (1235708242237).

Almost surely, 2^{3707122801321} is an apocalyptic number.

3707122801321 is the 1925389-th square number.

3707122801321 is the 962695-th centered octagonal number.

It is an amenable number.

3707122801321 is a deficient number, since it is larger than the sum of its proper divisors (1925390).

3707122801321 is an frugal number, since it uses more digits than its factorization.

3707122801321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850778 (or 1925389 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 3707122801321 in words is "three trillion, seven hundred seven billion, one hundred twenty-two million, eight hundred one thousand, three hundred twenty-one".