111220221013 has 16 divisors (see below), whose sum is σ = 123017761152. Its totient is φ = 99711936000.

The previous prime is 111220221011. The next prime is 111220221019. The reversal of 111220221013 is 310122022111.

It is a cyclic number.

It is not a de Polignac number, because 111220221013 - 2¹ = 111220221011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220221011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69393 + ... + 476713.

It is an arithmetic number, because the mean of its divisors is an integer number (7688610072).

Almost surely, 2^111220221013 is an apocalyptic number.

It is an amenable number.

111220221013 is a deficient number, since it is larger than the sum of its proper divisors (11797540139).

111220221013 is a wasteful number, since it uses less digits than its factorization.

111220221013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407676.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 111220221013 its reverse (310122022111), we get a palindrome (421342243124).

It can be divided in two parts, 111220 and 221013, that added together give a palindrome (332233).

The spelling of 111220221013 in words is "one hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, thirteen".