2329901221 has 4 divisors (see below), whose sum is σ = 2466954252. Its totient is φ = 2192848192.

The previous prime is 2329901213. The next prime is 2329901227. The reversal of 2329901221 is 1221099232.

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 2105800321 + 224100900 = 45889^2 + 14970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2329901221 - 2³ = 2329901213 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2329901227) 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, 68526490 + ... + 68526523.

It is an arithmetic number, because the mean of its divisors is an integer number (616738563).

Almost surely, 2^2329901221 is an apocalyptic number.

It is an amenable number.

2329901221 is a deficient number, since it is larger than the sum of its proper divisors (137053031).

2329901221 is a wasteful number, since it uses less digits than its factorization.

2329901221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137053030.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2329901221 is about 48269.0503428439. The cubic root of 2329901221 is about 1325.7017706018.

The spelling of 2329901221 in words is "two billion, three hundred twenty-nine million, nine hundred one thousand, two hundred twenty-one".