22222047 has 4 divisors (see below), whose sum is σ = 29629400. Its totient is φ = 14814696.

The previous prime is 22221977. The next prime is 22222049. The reversal of 22222047 is 74022222.

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

It is not a de Polignac number, because 22222047 - 2¹¹ = 22219999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222049) 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, 3703672 + ... + 3703677.

It is an arithmetic number, because the mean of its divisors is an integer number (7407350).

Almost surely, 2^22222047 is an apocalyptic number.

22222047 is a deficient number, since it is larger than the sum of its proper divisors (7407353).

22222047 is an equidigital number, since it uses as much as digits as its factorization.

22222047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7407352.

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 22222047 is about 4714.0266227504. The cubic root of 22222047 is about 281.1434828246.

Adding to 22222047 its reverse (74022222), we get a palindrome (96244269).

The spelling of 22222047 in words is "twenty-two million, two hundred twenty-two thousand, forty-seven".