9902216111 has 4 divisors (see below), whose sum is σ = 10423385400. Its totient is φ = 9381046824.

The previous prime is 9902216101. The next prime is 9902216113. The reversal of 9902216111 is 1116122099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9902216111 - 2⁶ = 9902216047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902216113) 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, 260584616 + ... + 260584653.

It is an arithmetic number, because the mean of its divisors is an integer number (2605846350).

Almost surely, 2^9902216111 is an apocalyptic number.

9902216111 is a deficient number, since it is larger than the sum of its proper divisors (521169289).

9902216111 is a wasteful number, since it uses less digits than its factorization.

9902216111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521169288.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 9902216111 is about 99509.8794643024. The cubic root of 9902216111 is about 2147.3893758594.

The spelling of 9902216111 in words is "nine billion, nine hundred two million, two hundred sixteen thousand, one hundred eleven".