20111120110 has 32 divisors (see below), whose sum is σ = 37377043200. Its totient is φ = 7783015680.

The previous prime is 20111120083. The next prime is 20111120111. The reversal of 20111120110 is 1102111102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111120111) 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, 2410426 + ... + 2418754.

It is an arithmetic number, because the mean of its divisors is an integer number (1168032600).

Almost surely, 2^20111120110 is an apocalyptic number.

20111120110 is a deficient number, since it is larger than the sum of its proper divisors (17265923090).

20111120110 is a wasteful number, since it uses less digits than its factorization.

20111120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16156.

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

Adding to 20111120110 its reverse (1102111102), we get a palindrome (21213231212).

The spelling of 20111120110 in words is "twenty billion, one hundred eleven million, one hundred twenty thousand, one hundred ten".