111211221110012 has 48 divisors (see below), whose sum is σ = 207476883274752. Its totient is φ = 52042235868480.

The previous prime is 111211221109979. The next prime is 111211221110023. The reversal of 111211221110012 is 210011122112111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29283914 + ... + 32862897.

It is an arithmetic number, because the mean of its divisors is an integer number (4322435068224).

Almost surely, 2^{111211221110012} is an apocalyptic number.

It is an amenable number.

111211221110012 is a deficient number, since it is larger than the sum of its proper divisors (96265662164740).

111211221110012 is a wasteful number, since it uses less digits than its factorization.

111211221110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62147258 (or 62147256 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111211221110012 its reverse (210011122112111), we get a palindrome (321222343222123).

The spelling of 111211221110012 in words is "one hundred eleven trillion, two hundred eleven billion, two hundred twenty-one million, one hundred ten thousand, twelve".