22102005 has 8 divisors (see below), whose sum is σ = 35363232. Its totient is φ = 11787728.

The previous prime is 22101979. The next prime is 22102013. The reversal of 22102005 is 50020122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22102005 - 2⁶ = 22101941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736719 + ... + 736748.

It is an arithmetic number, because the mean of its divisors is an integer number (4420404).

Almost surely, 2^22102005 is an apocalyptic number.

It is an amenable number.

22102005 is a deficient number, since it is larger than the sum of its proper divisors (13261227).

22102005 is a wasteful number, since it uses less digits than its factorization.

22102005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473475.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 22102005 is about 4701.2769541902. The cubic root of 22102005 is about 280.6363291409.

Adding to 22102005 its reverse (50020122), we get a palindrome (72122127).

The spelling of 22102005 in words is "twenty-two million, one hundred two thousand, five".