22262421 has 4 divisors (see below), whose sum is σ = 29683232. Its totient is φ = 14841612.

The previous prime is 22262417. The next prime is 22262441. The reversal of 22262421 is 12426222.

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 not a de Polignac number, because 22262421 - 2² = 22262417 is a prime.

It is a super-3 number, since 3×22262421³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22262441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3710401 + ... + 3710406.

It is an arithmetic number, because the mean of its divisors is an integer number (7420808).

Almost surely, 2^22262421 is an apocalyptic number.

It is an amenable number.

22262421 is a deficient number, since it is larger than the sum of its proper divisors (7420811).

22262421 is an equidigital number, since it uses as much as digits as its factorization.

22262421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420810.

The product of its digits is 768, while the sum is 21.

The square root of 22262421 is about 4718.3070056960. The cubic root of 22262421 is about 281.3136444609.

Adding to 22262421 its reverse (12426222), we get a palindrome (34688643).

The spelling of 22262421 in words is "twenty-two million, two hundred sixty-two thousand, four hundred twenty-one".