22303121 has 4 divisors (see below), whose sum is σ = 22681200. Its totient is φ = 21925044.

The previous prime is 22303103. The next prime is 22303147. The reversal of 22303121 is 12130322.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-22303121 is a prime.

It is a super-3 number, since 3×22303121³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22303096 and 22303105.

It is not an unprimeable number, because it can be changed into a prime (22303181) 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, 188951 + ... + 189068.

It is an arithmetic number, because the mean of its divisors is an integer number (5670300).

Almost surely, 2^22303121 is an apocalyptic number.

It is an amenable number.

22303121 is a deficient number, since it is larger than the sum of its proper divisors (378079).

22303121 is an equidigital number, since it uses as much as digits as its factorization.

22303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378078.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 22303121 is about 4722.6180239355. The cubic root of 22303121 is about 281.4849719658.

Adding to 22303121 its reverse (12130322), we get a palindrome (34433443).

The spelling of 22303121 in words is "twenty-two million, three hundred three thousand, one hundred twenty-one".