22101227 has 4 divisors (see below), whose sum is σ = 22117560. Its totient is φ = 22084896.

The previous prime is 22101193. The next prime is 22101239. The reversal of 22101227 is 72210122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72210122 = 2 ⋅36105061.

It is a cyclic number.

It is not a de Polignac number, because 22101227 - 2¹⁰ = 22100203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22101257) 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, 5933 + ... + 8910.

It is an arithmetic number, because the mean of its divisors is an integer number (5529390).

Almost surely, 2^22101227 is an apocalyptic number.

22101227 is a deficient number, since it is larger than the sum of its proper divisors (16333).

22101227 is a wasteful number, since it uses less digits than its factorization.

22101227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16332.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 22101227 is about 4701.1942099854. The cubic root of 22101227 is about 280.6330362627.

Adding to 22101227 its reverse (72210122), we get a palindrome (94311349).

The spelling of 22101227 in words is "twenty-two million, one hundred one thousand, two hundred twenty-seven".