22201772 has 6 divisors (see below), whose sum is σ = 38853108. Its totient is φ = 11100884.

The previous prime is 22201769. The next prime is 22201783. The reversal of 22201772 is 27710222.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2775218 + ... + 2775225.

It is an arithmetic number, because the mean of its divisors is an integer number (6475518).

Almost surely, 2^22201772 is an apocalyptic number.

It is an amenable number.

22201772 is a deficient number, since it is larger than the sum of its proper divisors (16651336).

22201772 is a wasteful number, since it uses less digits than its factorization.

22201772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550447 (or 5550445 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 22201772 is about 4711.8756350311. The cubic root of 22201772 is about 281.0579533715.

Adding to 22201772 its reverse (27710222), we get a palindrome (49911994).

The spelling of 22201772 in words is "twenty-two million, two hundred one thousand, seven hundred seventy-two".