4402152221 has 4 divisors (see below), whose sum is σ = 4402536444. Its totient is φ = 4401768000.

The previous prime is 4402152203. The next prime is 4402152269. The reversal of 4402152221 is 1222512044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286929721 + 4115222500 = 16939^2 + 64150^2 .

It is a cyclic number.

It is not a de Polignac number, because 4402152221 - 2²⁶ = 4335043357 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 (4402152421) 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, 174380 + ... + 198021.

It is an arithmetic number, because the mean of its divisors is an integer number (1100634111).

Almost surely, 2^4402152221 is an apocalyptic number.

It is an amenable number.

4402152221 is a deficient number, since it is larger than the sum of its proper divisors (384223).

4402152221 is a wasteful number, since it uses less digits than its factorization.

4402152221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384222.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 4402152221 is about 66348.7167999502. The cubic root of 4402152221 is about 1638.9096734758.

Adding to 4402152221 its reverse (1222512044), we get a palindrome (5624664265).

The spelling of 4402152221 in words is "four billion, four hundred two million, one hundred fifty-two thousand, two hundred twenty-one".