111221100010112 has 16 divisors (see below), whose sum is σ = 221573285176650. Its totient is φ = 55610550004992.

The previous prime is 111221100010109. The next prime is 111221100010123. The reversal of 111221100010112 is 211010001122111.

It can be written as a sum of positive squares in only one way, i.e., 98273596196416 + 12947503813696 = 9913304^2 + 3598264^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434457421787 + ... + 434457422042.

Almost surely, 2^{111221100010112} is an apocalyptic number.

It is an amenable number.

111221100010112 is a deficient number, since it is larger than the sum of its proper divisors (110352185166538).

111221100010112 is an frugal number, since it uses more digits than its factorization.

111221100010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868914843843 (or 868914843831 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111221100010112 its reverse (211010001122111), we get a palindrome (322231101132223).

The spelling of 111221100010112 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred million, ten thousand, one hundred twelve".