22506921211 has 4 divisors (see below), whose sum is σ = 22631269024. Its totient is φ = 22382573400.

The previous prime is 22506921209. The next prime is 22506921251. The reversal of 22506921211 is 11212960522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22506921211 - 2¹ = 22506921209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22506921251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62173635 + ... + 62173996.

It is an arithmetic number, because the mean of its divisors is an integer number (5657817256).

Almost surely, 2^22506921211 is an apocalyptic number.

22506921211 is a deficient number, since it is larger than the sum of its proper divisors (124347813).

22506921211 is a wasteful number, since it uses less digits than its factorization.

22506921211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124347812.

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 22506921211 in words is "twenty-two billion, five hundred six million, nine hundred twenty-one thousand, two hundred eleven".