21200112022111 has 8 divisors (see below), whose sum is σ = 23134077261648. Its totient is φ = 19267260504000.

The previous prime is 21200112022093. The next prime is 21200112022127. The reversal of 21200112022111 is 11122021100212.

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 21200112022111 - 2¹⁹ = 21200111497823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200112022211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278390550 + ... + 278466691.

It is an arithmetic number, because the mean of its divisors is an integer number (2891759657706).

Almost surely, 2^{21200112022111} is an apocalyptic number.

21200112022111 is a deficient number, since it is larger than the sum of its proper divisors (1933965239537).

21200112022111 is a wasteful number, since it uses less digits than its factorization.

21200112022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556860713.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21200112022111 its reverse (11122021100212), we get a palindrome (32322133122323).

The spelling of 21200112022111 in words is "twenty-one trillion, two hundred billion, one hundred twelve million, twenty-two thousand, one hundred eleven".