22420121 has 4 divisors (see below), whose sum is σ = 22704000. Its totient is φ = 22136244.

The previous prime is 22420117. The next prime is 22420129. The reversal of 22420121 is 12102422.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12102422 = 2 ⋅6051211.

It is a cyclic number.

It is not a de Polignac number, because 22420121 - 2² = 22420117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22420096 and 22420105.

It is not an unprimeable number, because it can be changed into a prime (22420129) 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, 141821 + ... + 141978.

It is an arithmetic number, because the mean of its divisors is an integer number (5676000).

Almost surely, 2^22420121 is an apocalyptic number.

It is an amenable number.

22420121 is a deficient number, since it is larger than the sum of its proper divisors (283879).

22420121 is an equidigital number, since it uses as much as digits as its factorization.

22420121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283878.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22420121 is about 4734.9890179387. The cubic root of 22420121 is about 281.9763280098.

Adding to 22420121 its reverse (12102422), we get a palindrome (34522543).

The spelling of 22420121 in words is "twenty-two million, four hundred twenty thousand, one hundred twenty-one".