22021135205 has 16 divisors (see below), whose sum is σ = 26552294208. Its totient is φ = 17532384000.

The previous prime is 22021135159. The next prime is 22021135259. The reversal of 22021135205 is 50253112022.

It is not a de Polignac number, because 22021135205 - 2²² = 22016940901 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2177210 + ... + 2187300.

It is an arithmetic number, because the mean of its divisors is an integer number (1659518388).

Almost surely, 2^22021135205 is an apocalyptic number.

It is an amenable number.

22021135205 is a deficient number, since it is larger than the sum of its proper divisors (4531159003).

22021135205 is a wasteful number, since it uses less digits than its factorization.

22021135205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12148.

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 22021135205 its reverse (50253112022), we get a palindrome (72274247227).

The spelling of 22021135205 in words is "twenty-two billion, twenty-one million, one hundred thirty-five thousand, two hundred five".