22221769 has 4 divisors (see below), whose sum is σ = 22242196. Its totient is φ = 22201344.

The previous prime is 22221767. The next prime is 22221781. The reversal of 22221769 is 96712222.

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 16096144 + 6125625 = 4012^2 + 2475^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221769 - 2¹ = 22221767 is a prime.

It is a super-2 number, since 2×22221769² = 987614034978722, 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 22221769.

It is not an unprimeable number, because it can be changed into a prime (22221767) 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, 8484 + ... + 10789.

It is an arithmetic number, because the mean of its divisors is an integer number (5560549).

Almost surely, 2^22221769 is an apocalyptic number.

It is an amenable number.

22221769 is a deficient number, since it is larger than the sum of its proper divisors (20427).

22221769 is a wasteful number, since it uses less digits than its factorization.

22221769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20426.

The product of its digits is 6048, while the sum is 31.

The square root of 22221769 is about 4713.9971361892. The cubic root of 22221769 is about 281.1423104421.

The spelling of 22221769 in words is "twenty-two million, two hundred twenty-one thousand, seven hundred sixty-nine".