9902120222111 has 16 divisors (see below), whose sum is σ = 10723299420288. Its totient is φ = 9089443123200.

The previous prime is 9902120222089. The next prime is 9902120222131. The reversal of 9902120222111 is 1112220212099.

9902120222111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9902120222111 - 2³⁰ = 9901046480287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902120222131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49598090 + ... + 49797336.

It is an arithmetic number, because the mean of its divisors is an integer number (670206213768).

Almost surely, 2^{9902120222111} is an apocalyptic number.

9902120222111 is a deficient number, since it is larger than the sum of its proper divisors (821179198177).

9902120222111 is a wasteful number, since it uses less digits than its factorization.

9902120222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220562.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 9902120222111 in words is "nine trillion, nine hundred two billion, one hundred twenty million, two hundred twenty-two thousand, one hundred eleven".