2202722521 has 8 divisors (see below), whose sum is σ = 2412718920. Its totient is φ = 2001662208.

The previous prime is 2202722519. The next prime is 2202722551. The reversal of 2202722521 is 1252272022.

It can be written as a sum of positive squares in 4 ways, for example, as 1264158025 + 938564496 = 35555^2 + 30636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2202722521 - 2¹ = 2202722519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2202722551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2233506 + ... + 2234491.

It is an arithmetic number, because the mean of its divisors is an integer number (301589865).

Almost surely, 2^2202722521 is an apocalyptic number.

It is an amenable number.

2202722521 is a deficient number, since it is larger than the sum of its proper divisors (209996399).

2202722521 is a wasteful number, since it uses less digits than its factorization.

2202722521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468043.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 2202722521 is about 46933.1707963568. The cubic root of 2202722521 is about 1301.1277238063.

Adding to 2202722521 its reverse (1252272022), we get a palindrome (3454994543).

The spelling of 2202722521 in words is "two billion, two hundred two million, seven hundred twenty-two thousand, five hundred twenty-one".