20102102111120 has 20 divisors (see below), whose sum is σ = 46737387408540. Its totient is φ = 8040840844416.

The previous prime is 20102102111089. The next prime is 20102102111123. The reversal of 20102102111120 is 2111120120102.

It can be written as a sum of positive squares in 2 ways, for example, as 6549013282816 + 13553088828304 = 2559104^2 + 3681452^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 20102102111095 and 20102102111104.

It is not an unprimeable number, because it can be changed into a prime (20102102111123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125638138115 + ... + 125638138274.

It is an arithmetic number, because the mean of its divisors is an integer number (2336869370427).

Almost surely, 2^{20102102111120} is an apocalyptic number.

20102102111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102102111120 is an abundant number, since it is smaller than the sum of its proper divisors (26635285297420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20102102111120 is a wasteful number, since it uses less digits than its factorization.

20102102111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251276276402 (or 251276276396 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20102102111120 its reverse (2111120120102), we get a palindrome (22213222231222).

The spelling of 20102102111120 in words is "twenty trillion, one hundred two billion, one hundred two million, one hundred eleven thousand, one hundred twenty".