12300111021 has 16 divisors (see below), whose sum is σ = 18374614848. Its totient is φ = 7253136000.

The previous prime is 12300111013. The next prime is 12300111023. The reversal of 12300111021 is 12011100321.

It is not a de Polignac number, because 12300111021 - 2³ = 12300111013 is a prime.

It is a super-2 number, since 2×12300111021² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12300110988 and 12300111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12300111023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5035680 + ... + 5038121.

It is an arithmetic number, because the mean of its divisors is an integer number (1148413428).

Almost surely, 2^12300111021 is an apocalyptic number.

12300111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12300111021 is a deficient number, since it is larger than the sum of its proper divisors (6074503827).

12300111021 is a wasteful number, since it uses less digits than its factorization.

12300111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10073852.

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

Adding to 12300111021 its reverse (12011100321), we get a palindrome (24311211342).

It can be divided in two parts, 12300 and 111021, that added together give a palindrome (123321).

The spelling of 12300111021 in words is "twelve billion, three hundred million, one hundred eleven thousand, twenty-one".