1230112020 has 24 divisors (see below), whose sum is σ = 3444313824. Its totient is φ = 328029856.

The previous prime is 1230111973. The next prime is 1230112021. The reversal of 1230112020 is 202110321.

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 = 1230111987 and 1230112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230112021) 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, 10250874 + ... + 10250993.

It is an arithmetic number, because the mean of its divisors is an integer number (143513076).

Almost surely, 2^1230112020 is an apocalyptic number.

1230112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230112020 is an abundant number, since it is smaller than the sum of its proper divisors (2214201804).

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

1230112020 is a wasteful number, since it uses less digits than its factorization.

1230112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20501879 (or 20501877 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1230112020 is about 35072.9528269292. The cubic root of 1230112020 is about 1071.4737952213.

Adding to 1230112020 its reverse (202110321), we get a palindrome (1432222341).

The spelling of 1230112020 in words is "one billion, two hundred thirty million, one hundred twelve thousand, twenty".