20021120110 has 16 divisors (see below), whose sum is σ = 36099420336. Its totient is φ = 7994802688.

The previous prime is 20021120083. The next prime is 20021120117. The reversal of 20021120110 is 1102112002.

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 (20021120117) 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, 1699507 + ... + 1711246.

It is an arithmetic number, because the mean of its divisors is an integer number (2256213771).

Almost surely, 2^20021120110 is an apocalyptic number.

20021120110 is a deficient number, since it is larger than the sum of its proper divisors (16078300226).

20021120110 is a wasteful number, since it uses less digits than its factorization.

20021120110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3411347.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20021120110 its reverse (1102112002), we get a palindrome (21123232112).

The spelling of 20021120110 in words is "twenty billion, twenty-one million, one hundred twenty thousand, one hundred ten".