22269421 has 4 divisors (see below), whose sum is σ = 22283100. Its totient is φ = 22255744.

The previous prime is 22269413. The next prime is 22269433. The reversal of 22269421 is 12496222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4536900 + 17732521 = 2130^2 + 4211^2 .

It is a cyclic number.

It is not a de Polignac number, because 22269421 - 2³ = 22269413 is a prime.

It is a super-2 number, since 2×22269421² = 991854223350482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22269421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22269461) 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, 4006 + ... + 7783.

It is an arithmetic number, because the mean of its divisors is an integer number (5570775).

Almost surely, 2^22269421 is an apocalyptic number.

It is an amenable number.

22269421 is a deficient number, since it is larger than the sum of its proper divisors (13679).

22269421 is a wasteful number, since it uses less digits than its factorization.

22269421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13678.

The product of its digits is 3456, while the sum is 28.

The square root of 22269421 is about 4719.0487388880. The cubic root of 22269421 is about 281.3431259678.

The spelling of 22269421 in words is "twenty-two million, two hundred sixty-nine thousand, four hundred twenty-one".