111212324042 has 4 divisors (see below), whose sum is σ = 166818486066. Its totient is φ = 55606162020.

The previous prime is 111212324029. The next prime is 111212324053. The reversal of 111212324042 is 240423212111.

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., 102464650201 + 8747673841 = 320101^2 + 93529^2 .

It is a super-2 number, since 2×111212324042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111212323999 and 111212324017.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27803081009 + ... + 27803081012.

Almost surely, 2^111212324042 is an apocalyptic number.

111212324042 is a deficient number, since it is larger than the sum of its proper divisors (55606162024).

111212324042 is an equidigital number, since it uses as much as digits as its factorization.

111212324042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55606162023.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 111212324042 its reverse (240423212111), we get a palindrome (351635536153).

The spelling of 111212324042 in words is "one hundred eleven billion, two hundred twelve million, three hundred twenty-four thousand, forty-two".