111007121668 has 24 divisors (see below), whose sum is σ = 195475896000. Its totient is φ = 55157544288.

The previous prime is 111007121663. The next prime is 111007121671. The reversal of 111007121668 is 866121700111.

It is a super-2 number, since 2×111007121668² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111007121663) by changing a digit.

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, 573978 + ... + 742606.

It is an arithmetic number, because the mean of its divisors is an integer number (8144829000).

Almost surely, 2^111007121668 is an apocalyptic number.

It is an amenable number.

111007121668 is a deficient number, since it is larger than the sum of its proper divisors (84468774332).

111007121668 is a wasteful number, since it uses less digits than its factorization.

111007121668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169659 (or 169657 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 34.

Adding to 111007121668 its reverse (866121700111), we get a palindrome (977128821779).

The spelling of 111007121668 in words is "one hundred eleven billion, seven million, one hundred twenty-one thousand, six hundred sixty-eight".