111221122013 has 8 divisors (see below), whose sum is σ = 114031846656. Its totient is φ = 108415064800.

The previous prime is 111221122009. The next prime is 111221122037. The reversal of 111221122013 is 310221122111.

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 111221122013 - 2² = 111221122009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111221121982 and 111221122000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221122913) 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, 1118573 + ... + 1213938.

It is an arithmetic number, because the mean of its divisors is an integer number (14253980832).

Almost surely, 2^111221122013 is an apocalyptic number.

It is an amenable number.

111221122013 is a deficient number, since it is larger than the sum of its proper divisors (2810724643).

111221122013 is a wasteful number, since it uses less digits than its factorization.

111221122013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333715.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111221122013 its reverse (310221122111), we get a palindrome (421442244124).

The spelling of 111221122013 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred twenty-two thousand, thirteen".