1012012300 has 72 divisors (see below), whose sum is σ = 2378754000. Its totient is φ = 371493120.

The previous prime is 1012012289. The next prime is 1012012301. The reversal of 1012012300 is 32102101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1012012301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230526 + ... + 234874.

It is an arithmetic number, because the mean of its divisors is an integer number (33038250).

Almost surely, 2^1012012300 is an apocalyptic number.

1012012300 is a gapful number since it is divisible by the number (10) 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 1012012300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1189377000).

1012012300 is an abundant number, since it is smaller than the sum of its proper divisors (1366741700).

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

1012012300 is a wasteful number, since it uses less digits than its factorization.

1012012300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4555 (or 4548 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1012012300 is about 31812.1407641800. The cubic root of 1012012300 is about 1003.9881733288.

Adding to 1012012300 its reverse (32102101), we get a palindrome (1044114401).

The spelling of 1012012300 in words is "one billion, twelve million, twelve thousand, three hundred".