222172369 has 4 divisors (see below), whose sum is σ = 222963300. Its totient is φ = 221381440.

The previous prime is 222172367. The next prime is 222172373. The reversal of 222172369 is 963271222.

It is a happy number.

222172369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 963271222 = 2 ⋅481635611.

It can be written as a sum of positive squares in 2 ways, for example, as 87890625 + 134281744 = 9375^2 + 11588^2 .

It is a cyclic number.

It is not a de Polignac number, because 222172369 - 2¹ = 222172367 is a prime.

It is a super-2 number, since 2×222172369² = 98721123094144322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222172367) 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, 395044 + ... + 395605.

It is an arithmetic number, because the mean of its divisors is an integer number (55740825).

Almost surely, 2^222172369 is an apocalyptic number.

It is an amenable number.

222172369 is a deficient number, since it is larger than the sum of its proper divisors (790931).

222172369 is an equidigital number, since it uses as much as digits as its factorization.

222172369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790930.

The product of its digits is 18144, while the sum is 34.

The square root of 222172369 is about 14905.4476283002. The cubic root of 222172369 is about 605.6615662315.

The spelling of 222172369 in words is "two hundred twenty-two million, one hundred seventy-two thousand, three hundred sixty-nine".