111031221100242 has 24 divisors (see below), whose sum is σ = 223309945461456. Its totient is φ = 36803644919224.

The previous prime is 111031221100231. The next prime is 111031221100253. The reversal of 111031221100242 is 242001122130111.

It is an interprime number because it is at equal distance from previous prime (111031221100231) and next prime (111031221100253).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288581568 + ... + 288966059.

It is an arithmetic number, because the mean of its divisors is an integer number (9304581060894).

Almost surely, 2^{111031221100242} is an apocalyptic number.

111031221100242 is an abundant number, since it is smaller than the sum of its proper divisors (112278724361214).

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

111031221100242 is an equidigital number, since it uses as much as digits as its factorization.

111031221100242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577547990 (or 577547811 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 111031221100242 its reverse (242001122130111), we get a palindrome (353032343230353).

The spelling of 111031221100242 in words is "one hundred eleven trillion, thirty-one billion, two hundred twenty-one million, one hundred thousand, two hundred forty-two".