111000121213 has 4 divisors (see below), whose sum is σ = 111000806560. Its totient is φ = 110999435868.

The previous prime is 111000121207. The next prime is 111000121237. The reversal of 111000121213 is 312121000111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111000121213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000121193 and 111000121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000121273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51106 + ... + 473932.

It is an arithmetic number, because the mean of its divisors is an integer number (27750201640).

Almost surely, 2^111000121213 is an apocalyptic number.

It is an amenable number.

111000121213 is a deficient number, since it is larger than the sum of its proper divisors (685347).

111000121213 is an equidigital number, since it uses as much as digits as its factorization.

111000121213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685346.

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

Adding to 111000121213 its reverse (312121000111), we get a palindrome (423121121324).

The spelling of 111000121213 in words is "one hundred eleven billion, one hundred twenty-one thousand, two hundred thirteen".