2952881221 has 4 divisors (see below), whose sum is σ = 2953026892. Its totient is φ = 2952735552.

The previous prime is 2952881189. The next prime is 2952881227. The reversal of 2952881221 is 1221882592.

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 2129822500 + 823058721 = 46150^2 + 28689^2 .

It is a cyclic number.

It is not a de Polignac number, because 2952881221 - 2⁵ = 2952881189 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 (2952881227) 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, 36330 + ... + 85003.

It is an arithmetic number, because the mean of its divisors is an integer number (738256723).

Almost surely, 2^2952881221 is an apocalyptic number.

It is an amenable number.

2952881221 is a deficient number, since it is larger than the sum of its proper divisors (145671).

2952881221 is a wasteful number, since it uses less digits than its factorization.

2952881221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145670.

The product of its digits is 46080, while the sum is 40.

The square root of 2952881221 is about 54340.4197720261. The cubic root of 2952881221 is about 1434.6589081135.

The spelling of 2952881221 in words is "two billion, nine hundred fifty-two million, eight hundred eighty-one thousand, two hundred twenty-one".