12121001113 has 8 divisors (see below), whose sum is σ = 13740406400. Its totient is φ = 10599741648.

The previous prime is 12121001111. The next prime is 12121001119. The reversal of 12121001113 is 31110012121.

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 12121001113 - 2¹ = 12121001111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121001093 and 12121001102.

It is not an unprimeable number, because it can be changed into a prime (12121001111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24536193 + ... + 24536686.

It is an arithmetic number, because the mean of its divisors is an integer number (1717550800).

Almost surely, 2^12121001113 is an apocalyptic number.

12121001113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12121001113 is a deficient number, since it is larger than the sum of its proper divisors (1619405287).

12121001113 is a wasteful number, since it uses less digits than its factorization.

12121001113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49072911.

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

Adding to 12121001113 its reverse (31110012121), we get a palindrome (43231013234).

The spelling of 12121001113 in words is "twelve billion, one hundred twenty-one million, one thousand, one hundred thirteen".