20111100022111 has 16 divisors (see below), whose sum is σ = 24021790309440. Its totient is φ = 16472084751360.

The previous prime is 20111100022109. The next prime is 20111100022177. The reversal of 20111100022111 is 11122000111102.

It is a happy number.

It is not a de Polignac number, because 20111100022111 - 2¹ = 20111100022109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20111100022091 and 20111100022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111100020111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510647620 + ... + 510687001.

It is an arithmetic number, because the mean of its divisors is an integer number (1501361894340).

Almost surely, 2^{20111100022111} is an apocalyptic number.

20111100022111 is a deficient number, since it is larger than the sum of its proper divisors (3910690287329).

20111100022111 is a wasteful number, since it uses less digits than its factorization.

20111100022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021334754.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 20111100022111 its reverse (11122000111102), we get a palindrome (31233100133213).

The spelling of 20111100022111 in words is "twenty trillion, one hundred eleven billion, one hundred million, twenty-two thousand, one hundred eleven".