12021300100 has 36 divisors (see below), whose sum is σ = 27620708724. Its totient is φ = 4525665280.

The previous prime is 12021300089. The next prime is 12021300143. The reversal of 12021300100 is 100312021.

It can be written as a sum of positive squares in 6 ways, for example, as 40246336 + 11981053764 = 6344^2 + 109458^2 .

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

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, 3533977 + ... + 3537376.

It is an arithmetic number, because the mean of its divisors is an integer number (767241909).

Almost surely, 2^12021300100 is an apocalyptic number.

12021300100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021300100 is an abundant number, since it is smaller than the sum of its proper divisors (15599408624).

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

12021300100 is a wasteful number, since it uses less digits than its factorization.

12021300100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7071384 (or 7071377 counting only the distinct ones).

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

Adding to 12021300100 its reverse (100312021), we get a palindrome (12121612121).

The spelling of 12021300100 in words is "twelve billion, twenty-one million, three hundred thousand, one hundred".