12121100113 has 8 divisors (see below), whose sum is σ = 12996564480. Its totient is φ = 11263686720.

The previous prime is 12121100111. The next prime is 12121100129. The reversal of 12121100113 is 31100112121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12121100113 - 2¹ = 12121100111 is a prime.

It is a super-2 number, since 2×12121100113² (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 = 12121100093 and 12121100102.

It is not an unprimeable number, because it can be changed into a prime (12121100111) 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, 4511353 + ... + 4514038.

It is an arithmetic number, because the mean of its divisors is an integer number (1624570560).

Almost surely, 2^12121100113 is an apocalyptic number.

It is an amenable number.

12121100113 is a deficient number, since it is larger than the sum of its proper divisors (875464367).

12121100113 is an equidigital number, since it uses as much as digits as its factorization.

12121100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9025487.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12121100113 its reverse (31100112121), we get a palindrome (43221212234).

The spelling of 12121100113 in words is "twelve billion, one hundred twenty-one million, one hundred thousand, one hundred thirteen".