22122705 has 16 divisors (see below), whose sum is σ = 38614464. Its totient is φ = 10726080.

The previous prime is 22122703. The next prime is 22122719. The reversal of 22122705 is 50722122.

It is a happy number.

It is not a de Polignac number, because 22122705 - 2¹ = 22122703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22122701) 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, 66874 + ... + 67203.

It is an arithmetic number, because the mean of its divisors is an integer number (2413404).

Almost surely, 2^22122705 is an apocalyptic number.

It is an amenable number.

22122705 is a deficient number, since it is larger than the sum of its proper divisors (16491759).

22122705 is a wasteful number, since it uses less digits than its factorization.

22122705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134096.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 22122705 is about 4703.4779684825. The cubic root of 22122705 is about 280.7239133426.

Adding to 22122705 its reverse (50722122), we get a palindrome (72844827).

The spelling of 22122705 in words is "twenty-two million, one hundred twenty-two thousand, seven hundred five".