111216560642 has 16 divisors (see below), whose sum is σ = 192696073632. Its totient is φ = 47579277120.

The previous prime is 111216560639. The next prime is 111216560677. The reversal of 111216560642 is 246065612111.

It is a super-2 number, since 2×111216560642² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148684868 + ... + 148685615.

It is an arithmetic number, because the mean of its divisors is an integer number (12043504602).

Almost surely, 2^111216560642 is an apocalyptic number.

111216560642 is a deficient number, since it is larger than the sum of its proper divisors (81479512990).

111216560642 is a wasteful number, since it uses less digits than its factorization.

111216560642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297370513.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 111216560642 in words is "one hundred eleven billion, two hundred sixteen million, five hundred sixty thousand, six hundred forty-two".