8902120222021 has 4 divisors (see below), whose sum is σ = 9586898700652. Its totient is φ = 8217341743392.

The previous prime is 8902120222001. The next prime is 8902120222057. The reversal of 8902120222021 is 1202220212098.

8902120222021 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 2078066402500 + 6824053819521 = 1441550^2 + 2612289^2 .

It is a cyclic number.

It is not a de Polignac number, because 8902120222021 - 2¹⁹ = 8902119697733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8902120222001) 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, 342389239296 + ... + 342389239321.

It is an arithmetic number, because the mean of its divisors is an integer number (2396724675163).

Almost surely, 2^{8902120222021} is an apocalyptic number.

It is an amenable number.

8902120222021 is a deficient number, since it is larger than the sum of its proper divisors (684778478631).

8902120222021 is a wasteful number, since it uses less digits than its factorization.

8902120222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684778478630.

The product of its (nonzero) digits is 4608, while the sum is 31.

The spelling of 8902120222021 in words is "eight trillion, nine hundred two billion, one hundred twenty million, two hundred twenty-two thousand, twenty-one".