111161126442 has 32 divisors (see below), whose sum is σ = 232016980608. Its totient is φ = 35438317376.

The previous prime is 111161126441. The next prime is 111161126443. The reversal of 111161126442 is 244621161111.

It is an interprime number because it is at equal distance from previous prime (111161126441) and next prime (111161126443).

It is not an unprimeable number, because it can be changed into a prime (111161126441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1187668 + ... + 1277840.

It is an arithmetic number, because the mean of its divisors is an integer number (7250530644).

Almost surely, 2^111161126442 is an apocalyptic number.

111161126442 is an abundant number, since it is smaller than the sum of its proper divisors (120855854166).

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

111161126442 is a wasteful number, since it uses less digits than its factorization.

111161126442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99134.

The product of its digits is 2304, while the sum is 30.

Adding to 111161126442 its reverse (244621161111), we get a palindrome (355782287553).

The spelling of 111161126442 in words is "one hundred eleven billion, one hundred sixty-one million, one hundred twenty-six thousand, four hundred forty-two".