12112300521 has 8 divisors (see below), whose sum is σ = 17944148960. Its totient is φ = 8074866996.

The previous prime is 12112300517. The next prime is 12112300537. The reversal of 12112300521 is 12500321121.

12112300521 is a `hidden beast` number, since 1 + 2 + 112 + 30 + 0 + 521 = 666.

It is not a de Polignac number, because 12112300521 - 2² = 12112300517 is a prime.

It is a super-2 number, since 2×12112300521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112300494 and 12112300503.

It is not an unprimeable number, because it can be changed into a prime (12112300591) 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, 224301835 + ... + 224301888.

It is an arithmetic number, because the mean of its divisors is an integer number (2243018620).

Almost surely, 2^12112300521 is an apocalyptic number.

It is an amenable number.

12112300521 is a deficient number, since it is larger than the sum of its proper divisors (5831848439).

12112300521 is an equidigital number, since it uses as much as digits as its factorization.

12112300521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448603732 (or 448603726 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 12112300521 its reverse (12500321121), we get a palindrome (24612621642).

The spelling of 12112300521 in words is "twelve billion, one hundred twelve million, three hundred thousand, five hundred twenty-one".