111221054442 has 12 divisors (see below), whose sum is σ = 240978951330. Its totient is φ = 37073684808.

The previous prime is 111221054389. The next prime is 111221054443. The reversal of 111221054442 is 244450122111.

111221054442 is a `hidden beast` number, since 1 + 1 + 1 + 2 + 210 + 5 + 4 + 442 = 666.

It can be written as a sum of positive squares in only one way, i.e., 111142891161 + 78163281 = 333381^2 + 8841^2 .

It is not an unprimeable number, because it can be changed into a prime (111221054443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3089473717 + ... + 3089473752.

Almost surely, 2^111221054442 is an apocalyptic number.

111221054442 is an abundant number, since it is smaller than the sum of its proper divisors (129757896888).

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

111221054442 is a wasteful number, since it uses less digits than its factorization.

111221054442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6178947477 (or 6178947474 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 111221054442 its reverse (244450122111), we get a palindrome (355671176553).

The spelling of 111221054442 in words is "one hundred eleven billion, two hundred twenty-one million, fifty-four thousand, four hundred forty-two".