20310111120 has 160 divisors (see below), whose sum is σ = 68088392064. Its totient is φ = 4978483200.

The previous prime is 20310111103. The next prime is 20310111137. The reversal of 20310111120 is 2111101302.

It is an interprime number because it is at equal distance from previous prime (20310111103) and next prime (20310111137).

It is a super-2 number, since 2×20310111120² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20310111096 and 20310111105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738415 + ... + 765425.

Almost surely, 2^20310111120 is an apocalyptic number.

20310111120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20310111120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34044196032).

20310111120 is an abundant number, since it is smaller than the sum of its proper divisors (47778280944).

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

20310111120 is a wasteful number, since it uses less digits than its factorization.

20310111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27281 (or 27275 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 20310111120 its reverse (2111101302), we get a palindrome (22421212422).

The spelling of 20310111120 in words is "twenty billion, three hundred ten million, one hundred eleven thousand, one hundred twenty".