111354211556 has 12 divisors (see below), whose sum is σ = 222708423168. Its totient is φ = 47723233512.

The previous prime is 111354211541. The next prime is 111354211559. The reversal of 111354211556 is 655112453111.

111354211556 is an admirable number.

It is a super-2 number, since 2×111354211556² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111354211559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988468036 + ... + 1988468091.

It is an arithmetic number, because the mean of its divisors is an integer number (18559035264).

Almost surely, 2^111354211556 is an apocalyptic number.

It is an amenable number.

111354211556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111354211556 is a wasteful number, since it uses less digits than its factorization.

111354211556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976936138 (or 3976936136 counting only the distinct ones).

The product of its digits is 18000, while the sum is 35.

Adding to 111354211556 its reverse (655112453111), we get a palindrome (766466664667).

The spelling of 111354211556 in words is "one hundred eleven billion, three hundred fifty-four million, two hundred eleven thousand, five hundred fifty-six".