2215125321 has 4 divisors (see below), whose sum is σ = 2953500432. Its totient is φ = 1476750212.

The previous prime is 2215125281. The next prime is 2215125329. The reversal of 2215125321 is 1235215122.

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 not a de Polignac number, because 2215125321 - 2¹⁰ = 2215124297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2215125291 and 2215125300.

It is not an unprimeable number, because it can be changed into a prime (2215125329) 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, 369187551 + ... + 369187556.

It is an arithmetic number, because the mean of its divisors is an integer number (738375108).

Almost surely, 2^2215125321 is an apocalyptic number.

It is an amenable number.

2215125321 is a deficient number, since it is larger than the sum of its proper divisors (738375111).

2215125321 is an equidigital number, since it uses as much as digits as its factorization.

2215125321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738375110.

The product of its digits is 1200, while the sum is 24.

The square root of 2215125321 is about 47065.1178793807. The cubic root of 2215125321 is about 1303.5652274910.

The spelling of 2215125321 in words is "two billion, two hundred fifteen million, one hundred twenty-five thousand, three hundred twenty-one".