9021112111021 has 4 divisors (see below), whose sum is σ = 9038360891872. Its totient is φ = 9003863330172.

The previous prime is 9021112110947. The next prime is 9021112111027. The reversal of 9021112111021 is 1201112111209.

It is a happy number.

9021112111021 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, 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 9021112111021 - 2³⁹ = 8471356297133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9021112110983 and 9021112111001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9021112111027) 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, 8624389641 + ... + 8624390686.

It is an arithmetic number, because the mean of its divisors is an integer number (2259590222968).

Almost surely, 2^{9021112111021} is an apocalyptic number.

It is an amenable number.

9021112111021 is a deficient number, since it is larger than the sum of its proper divisors (17248780851).

9021112111021 is a wasteful number, since it uses less digits than its factorization.

9021112111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17248780850.

The product of its (nonzero) digits is 72, while the sum is 22.

The spelling of 9021112111021 in words is "nine trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, twenty-one".