221201112211112 has 32 divisors (see below), whose sum is σ = 452482562080800. Its totient is φ = 100540239729600.

The previous prime is 221201112211099. The next prime is 221201112211199. The reversal of 221201112211112 is 211112211102122.

It is a happy 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, 69948839 + ... + 73042742.

It is an arithmetic number, because the mean of its divisors is an integer number (14140080065025).

Almost surely, 2^{221201112211112} is an apocalyptic number.

221201112211112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

221201112211112 is an abundant number, since it is smaller than the sum of its proper divisors (231281449869688).

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

221201112211112 is a wasteful number, since it uses less digits than its factorization.

221201112211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143009177 (or 143009173 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 221201112211112 its reverse (211112211102122), we get a palindrome (432313323313234).

The spelling of 221201112211112 in words is "two hundred twenty-one trillion, two hundred one billion, one hundred twelve million, two hundred eleven thousand, one hundred twelve".