111202142242 has 4 divisors (see below), whose sum is σ = 166803213366. Its totient is φ = 55601071120.

The previous prime is 111202142237. The next prime is 111202142257. The reversal of 111202142242 is 242241202111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96006402801 + 15195739441 = 309849^2 + 123271^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27800535559 + ... + 27800535562.

Almost surely, 2^111202142242 is an apocalyptic number.

111202142242 is a deficient number, since it is larger than the sum of its proper divisors (55601071124).

111202142242 is an equidigital number, since it uses as much as digits as its factorization.

111202142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55601071123.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 111202142242 its reverse (242241202111), we get a palindrome (353443344353).

The spelling of 111202142242 in words is "one hundred eleven billion, two hundred two million, one hundred forty-two thousand, two hundred forty-two".