22112021 has 8 divisors (see below), whose sum is σ = 23116800. Its totient is φ = 21125520.

The previous prime is 22112017. The next prime is 22112033. The reversal of 22112021 is 12021122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22112021 - 2² = 22112017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111993 and 22112011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2066 + ... + 6963.

It is an arithmetic number, because the mean of its divisors is an integer number (2889600).

Almost surely, 2^22112021 is an apocalyptic number.

It is an amenable number.

22112021 is a deficient number, since it is larger than the sum of its proper divisors (1004779).

22112021 is an equidigital number, since it uses as much as digits as its factorization.

22112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22112021 is about 4702.3420760298. The cubic root of 22112021 is about 280.6787148728.

Adding to 22112021 its reverse (12021122), we get a palindrome (34133143).

The spelling of 22112021 in words is "twenty-two million, one hundred twelve thousand, twenty-one".