11112021 has 12 divisors (see below), whose sum is σ = 16117920. Its totient is φ = 7377000.

The previous prime is 11112019. The next prime is 11112037. The reversal of 11112021 is 12021111.

It is a happy number.

11112021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11112021 - 2¹ = 11112019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11111994 and 11112012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201 + ... + 4718.

It is an arithmetic number, because the mean of its divisors is an integer number (1343160).

Almost surely, 2^11112021 is an apocalyptic number.

It is an amenable number.

11112021 is a deficient number, since it is larger than the sum of its proper divisors (5005899).

11112021 is a wasteful number, since it uses less digits than its factorization.

11112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176 (or 5173 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 11112021 is about 3333.4698138726. The cubic root of 11112021 is about 223.1504076238.

Adding to 11112021 its reverse (12021111), we get a palindrome (23133132).

It can be divided in two parts, 111 and 12021, that multiplied together give a palindrome (1334331).

The spelling of 11112021 in words is "eleven million, one hundred twelve thousand, twenty-one".