20000000101111 has 24 divisors (see below), whose sum is σ = 22366639728000. Its totient is φ = 17830607485824.

The previous prime is 20000000101091. The next prime is 20000000101127. The reversal of 20000000101111 is 11110100000002.

It is not a de Polignac number, because 20000000101111 - 2⁵ = 20000000101079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000000101094 and 20000000101103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000000101171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44908950 + ... + 45352108.

It is an arithmetic number, because the mean of its divisors is an integer number (931943322000).

Almost surely, 2^{20000000101111} is an apocalyptic number.

20000000101111 is a deficient number, since it is larger than the sum of its proper divisors (2366639626889).

20000000101111 is a wasteful number, since it uses less digits than its factorization.

20000000101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451431 (or 451414 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 20000000101111 its reverse (11110100000002), we get a palindrome (31110100101113).

The spelling of 20000000101111 in words is "twenty trillion, one hundred one thousand, one hundred eleven".