9911222110421 has 4 divisors (see below), whose sum is σ = 9911234577792. Its totient is φ = 9911209643052.

The previous prime is 9911222110397. The next prime is 9911222110441. The reversal of 9911222110421 is 1240112221199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9911222110421 - 2¹⁸ = 9911221848277 is a prime.

It is a super-2 number, since 2×9911222110421² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9911222110441) 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, 4953605 + ... + 6660378.

It is an arithmetic number, because the mean of its divisors is an integer number (2477808644448).

Almost surely, 2^{9911222110421} is an apocalyptic number.

It is an amenable number.

9911222110421 is a deficient number, since it is larger than the sum of its proper divisors (12467371).

9911222110421 is a wasteful number, since it uses less digits than its factorization.

9911222110421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12467370.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 9911222110421 in words is "nine trillion, nine hundred eleven billion, two hundred twenty-two million, one hundred ten thousand, four hundred twenty-one".