22072227 has 16 divisors (see below), whose sum is σ = 30387840. Its totient is φ = 14241600.

The previous prime is 22072213. The next prime is 22072229. The reversal of 22072227 is 72227022.

It is not a de Polignac number, because 22072227 - 2⁶ = 22072163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22072197 and 22072206.

It is not an unprimeable number, because it can be changed into a prime (22072229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16452 + ... + 17742.

It is an arithmetic number, because the mean of its divisors is an integer number (1899240).

Almost surely, 2^22072227 is an apocalyptic number.

22072227 is a deficient number, since it is larger than the sum of its proper divisors (8315613).

22072227 is a wasteful number, since it uses less digits than its factorization.

22072227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 22072227 is about 4698.1088748559. The cubic root of 22072227 is about 280.5102388540.

Adding to 22072227 its reverse (72227022), we get a palindrome (94299249).

The spelling of 22072227 in words is "twenty-two million, seventy-two thousand, two hundred twenty-seven".