2252015221 has 4 divisors (see below), whose sum is σ = 2304387712. Its totient is φ = 2199642732.

The previous prime is 2252015203. The next prime is 2252015237. The reversal of 2252015221 is 1225102522.

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 2252015221 - 2⁷ = 2252015093 is a prime.

It is a super-3 number, since 3×2252015221³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2252015192 and 2252015201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2252015251) 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, 26186181 + ... + 26186266.

It is an arithmetic number, because the mean of its divisors is an integer number (576096928).

Almost surely, 2^2252015221 is an apocalyptic number.

It is an amenable number.

2252015221 is a deficient number, since it is larger than the sum of its proper divisors (52372491).

2252015221 is an equidigital number, since it uses as much as digits as its factorization.

2252015221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52372490.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2252015221 is about 47455.4024427146. The cubic root of 2252015221 is about 1310.7617931872.

Adding to 2252015221 its reverse (1225102522), we get a palindrome (3477117743).

The spelling of 2252015221 in words is "two billion, two hundred fifty-two million, fifteen thousand, two hundred twenty-one".