21113113022111 has 8 divisors (see below), whose sum is σ = 23043619141200. Its totient is φ = 19184462271040.

The previous prime is 21113113022083. The next prime is 21113113022129. The reversal of 21113113022111 is 11122031131112.

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

It is not a de Polignac number, because 21113113022111 - 2¹⁴ = 21113113005727 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 (21113113022171) 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, 463818206 + ... + 463863723.

It is an arithmetic number, because the mean of its divisors is an integer number (2880452392650).

Almost surely, 2^{21113113022111} is an apocalyptic number.

21113113022111 is a deficient number, since it is larger than the sum of its proper divisors (1930506119089).

21113113022111 is a wasteful number, since it uses less digits than its factorization.

21113113022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927684009.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 21113113022111 its reverse (11122031131112), we get a palindrome (32235144153223).

The spelling of 21113113022111 in words is "twenty-one trillion, one hundred thirteen billion, one hundred thirteen million, twenty-two thousand, one hundred eleven".