3899022121 has 2 divisors, whose sum is σ = 3899022122. Its totient is φ = 3899022120.

The previous prime is 3899022107. The next prime is 3899022133. The reversal of 3899022121 is 1212209983.

3899022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3383050896 + 515971225 = 58164^2 + 22715^2 .

It is an emirp because it is prime and its reverse (1212209983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3899022121 is a prime.

It is not a weakly prime, because it can be changed into another prime (3899022151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949511060 + 1949511061.

It is an arithmetic number, because the mean of its divisors is an integer number (1949511061).

Almost surely, 2^3899022121 is an apocalyptic number.

It is an amenable number.

3899022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3899022121 is an equidigital number, since it uses as much as digits as its factorization.

3899022121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 3899022121 is about 62442.1501952007. The cubic root of 3899022121 is about 1573.9293465646.

The spelling of 3899022121 in words is "three billion, eight hundred ninety-nine million, twenty-two thousand, one hundred twenty-one".