20011112110 has 32 divisors (see below), whose sum is σ = 39315953664. Its totient is φ = 7272804000.

The previous prime is 20011112089. The next prime is 20011112137. The reversal of 20011112110 is 1121111002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157195 + ... + 254425.

It is an arithmetic number, because the mean of its divisors is an integer number (1228623552).

Almost surely, 2^20011112110 is an apocalyptic number.

20011112110 is a deficient number, since it is larger than the sum of its proper divisors (19304841554).

20011112110 is a wasteful number, since it uses less digits than its factorization.

20011112110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99120.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 20011112110 its reverse (1121111002), we get a palindrome (21132223112).

It can be divided in two parts, 2001 and 1112110, that added together give a palindrome (1114111).

The spelling of 20011112110 in words is "twenty billion, eleven million, one hundred twelve thousand, one hundred ten".