111220221102 has 16 divisors (see below), whose sum is σ = 230110802640. Its totient is φ = 35795013632.

The previous prime is 111220221071. The next prime is 111220221103. The reversal of 111220221102 is 201122022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220221103) 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, 319598163 + ... + 319598510.

It is an arithmetic number, because the mean of its divisors is an integer number (14381925165).

Almost surely, 2^111220221102 is an apocalyptic number.

111220221102 is an abundant number, since it is smaller than the sum of its proper divisors (118890581538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111220221102 is a wasteful number, since it uses less digits than its factorization.

111220221102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639196707.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111220221102 its reverse (201122022111), we get a palindrome (312342243213).

The spelling of 111220221102 in words is "one hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, one hundred two".