2044902121 has 2 divisors, whose sum is σ = 2044902122. Its totient is φ = 2044902120.

The previous prime is 2044902107. The next prime is 2044902131. The reversal of 2044902121 is 1212094402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087680400 + 957221721 = 32980^2 + 30939^2 .

It is a cyclic number.

It is not a de Polignac number, because 2044902121 - 2⁵ = 2044902089 is a prime.

It is not a weakly prime, because it can be changed into another prime (2044902131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022451060 + 1022451061.

It is an arithmetic number, because the mean of its divisors is an integer number (1022451061).

Almost surely, 2^2044902121 is an apocalyptic number.

It is an amenable number.

2044902121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2044902121 is an equidigital number, since it uses as much as digits as its factorization.

2044902121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2044902121 is about 45220.5939921182. The cubic root of 2044902121 is about 1269.2802090263.

Adding to 2044902121 its reverse (1212094402), we get a palindrome (3256996523).

The spelling of 2044902121 in words is "two billion, forty-four million, nine hundred two thousand, one hundred twenty-one".