112212101221 has 16 divisors (see below), whose sum is σ = 124767034560. Its totient is φ = 100050837120.

The previous prime is 112212101219. The next prime is 112212101249. The reversal of 112212101221 is 122101212211.

It is a cyclic number.

It is not a de Polignac number, because 112212101221 - 2¹ = 112212101219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112212101195 and 112212101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112212171221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1689010 + ... + 1754188.

It is an arithmetic number, because the mean of its divisors is an integer number (7797939660).

Almost surely, 2^112212101221 is an apocalyptic number.

112212101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112212101221 is a deficient number, since it is larger than the sum of its proper divisors (12554933339).

112212101221 is a wasteful number, since it uses less digits than its factorization.

112212101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68196.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112212101221 its reverse (122101212211), we get a palindrome (234313313432).

The spelling of 112212101221 in words is "one hundred twelve billion, two hundred twelve million, one hundred one thousand, two hundred twenty-one".