22100655 has 16 divisors (see below), whose sum is σ = 36317664. Its totient is φ = 11468160.

The previous prime is 22100651. The next prime is 22100657. The reversal of 22100655 is 55600122.

It is not a de Polignac number, because 22100655 - 2² = 22100651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100651) 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, 19356 + ... + 20465.

It is an arithmetic number, because the mean of its divisors is an integer number (2269854).

Almost surely, 2^22100655 is an apocalyptic number.

22100655 is a deficient number, since it is larger than the sum of its proper divisors (14217009).

22100655 is a wasteful number, since it uses less digits than its factorization.

22100655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39866.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 22100655 is about 4701.1333739855. The cubic root of 22100655 is about 280.6306152285.

Adding to 22100655 its reverse (55600122), we get a palindrome (77700777).

The spelling of 22100655 in words is "twenty-two million, one hundred thousand, six hundred fifty-five".