20012231120 has 60 divisors (see below), whose sum is σ = 54124927524. Its totient is φ = 6861335040.

The previous prime is 20012231111. The next prime is 20012231149. The reversal of 20012231120 is 2113221002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15088682896 + 4923548224 = 122836^2 + 70168^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20012231095 and 20012231104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2548661 + ... + 2556500.

Almost surely, 2^20012231120 is an apocalyptic number.

20012231120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012231120 is an abundant number, since it is smaller than the sum of its proper divisors (34112696404).

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

20012231120 is a wasteful number, since it uses less digits than its factorization.

20012231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105188 (or 5105175 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20012231120 its reverse (2113221002), we get a palindrome (22125452122).

The spelling of 20012231120 in words is "twenty billion, twelve million, two hundred thirty-one thousand, one hundred twenty".