111023211242 has 4 divisors (see below), whose sum is σ = 166534816866. Its totient is φ = 55511605620.

The previous prime is 111023211209. The next prime is 111023211251. The reversal of 111023211242 is 242112320111.

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., 68017161601 + 43006049641 = 260801^2 + 207379^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27755802809 + ... + 27755802812.

Almost surely, 2^111023211242 is an apocalyptic number.

111023211242 is a deficient number, since it is larger than the sum of its proper divisors (55511605624).

111023211242 is an equidigital number, since it uses as much as digits as its factorization.

111023211242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55511605623.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 111023211242 its reverse (242112320111), we get a palindrome (353135531353).

The spelling of 111023211242 in words is "one hundred eleven billion, twenty-three million, two hundred eleven thousand, two hundred forty-two".