20111122206999 has 64 divisors (see below), whose sum is σ = 31683836620800. Its totient is φ = 12563968790016.

The previous prime is 20111122206991. The next prime is 20111122207027. The reversal of 20111122206999 is 99960222111102.

It is not a de Polignac number, because 20111122206999 - 2³ = 20111122206991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111122206991) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1038090877 + ... + 1038110249.

It is an arithmetic number, because the mean of its divisors is an integer number (495059947200).

Almost surely, 2^{20111122206999} is an apocalyptic number.

20111122206999 is a deficient number, since it is larger than the sum of its proper divisors (11572714413801).

20111122206999 is a wasteful number, since it uses less digits than its factorization.

20111122206999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29101 (or 29095 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 20111122206999 in words is "twenty trillion, one hundred eleven billion, one hundred twenty-two million, two hundred six thousand, nine hundred ninety-nine".