2321899121 has 4 divisors (see below), whose sum is σ = 2322223092. Its totient is φ = 2321575152.

The previous prime is 2321899103. The next prime is 2321899141. The reversal of 2321899121 is 1219981232.

2321899121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 364810000 + 1957089121 = 19100^2 + 44239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2321899121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321899141) 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, 150986 + ... + 165651.

It is an arithmetic number, because the mean of its divisors is an integer number (580555773).

Almost surely, 2^2321899121 is an apocalyptic number.

It is an amenable number.

2321899121 is a deficient number, since it is larger than the sum of its proper divisors (323971).

2321899121 is an equidigital number, since it uses as much as digits as its factorization.

2321899121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323970.

The product of its digits is 15552, while the sum is 38.

The square root of 2321899121 is about 48186.0884592223. The cubic root of 2321899121 is about 1324.1823118655.

The spelling of 2321899121 in words is "two billion, three hundred twenty-one million, eight hundred ninety-nine thousand, one hundred twenty-one".