8902121 has 2 divisors, whose sum is σ = 8902122. Its totient is φ = 8902120.

The previous prime is 8902111. The next prime is 8902133. The reversal of 8902121 is 1212098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7778521 + 1123600 = 2789^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 8902121 - 2¹⁰ = 8901097 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8902111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4451060 + 4451061.

It is an arithmetic number, because the mean of its divisors is an integer number (4451061).

Almost surely, 2^8902121 is an apocalyptic number.

It is an amenable number.

8902121 is a deficient number, since it is larger than the sum of its proper divisors (1).

8902121 is an equidigital number, since it uses as much as digits as its factorization.

8902121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8902121 is about 2983.6422372664. The cubic root of 8902121 is about 207.2515708829.

Subtracting from 8902121 its sum of digits (23), we obtain a palindrome (8902098).

The spelling of 8902121 in words is "eight million, nine hundred two thousand, one hundred twenty-one".