111221100001012 has 24 divisors (see below), whose sum is σ = 203994111053376. Its totient is φ = 52958370915648.

The previous prime is 111221100000977. The next prime is 111221100001087. The reversal of 111221100001012 is 210100001122111.

It is a happy number.

It is a super-2 number, since 2×111221100001012² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111221100000983 and 111221100001001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2662809513 + ... + 2662851280.

It is an arithmetic number, because the mean of its divisors is an integer number (8499754627224).

Almost surely, 2^{111221100001012} is an apocalyptic number.

It is an amenable number.

111221100001012 is a deficient number, since it is larger than the sum of its proper divisors (92773011052364).

111221100001012 is a wasteful number, since it uses less digits than its factorization.

111221100001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325661047 (or 5325661045 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111221100001012 its reverse (210100001122111), we get a palindrome (321321101123123).

The spelling of 111221100001012 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred million, one thousand, twelve".