111220143142242 has 16 divisors (see below), whose sum is σ = 222995000220192. Its totient is φ = 36980928724800.

The previous prime is 111220143142237. The next prime is 111220143142313. The reversal of 111220143142242 is 242241341022111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23113078048 + ... + 23113082859.

It is an arithmetic number, because the mean of its divisors is an integer number (13937187513762).

Almost surely, 2^{111220143142242} is an apocalyptic number.

111220143142242 is an abundant number, since it is smaller than the sum of its proper divisors (111774857077950).

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

111220143142242 is a wasteful number, since it uses less digits than its factorization.

111220143142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46226161313.

The product of its (nonzero) digits is 6144, while the sum is 30.

Adding to 111220143142242 its reverse (242241341022111), we get a palindrome (353461484164353).

The spelling of 111220143142242 in words is "one hundred eleven trillion, two hundred twenty billion, one hundred forty-three million, one hundred forty-two thousand, two hundred forty-two".