112001221221 has 16 divisors (see below), whose sum is σ = 153771546624. Its totient is φ = 72459728064.

The previous prime is 112001221099. The next prime is 112001221231. The reversal of 112001221221 is 122122100211.

It is not a de Polignac number, because 112001221221 - 2²² = 111997026917 is a prime.

It is a super-3 number, since 3×112001221221³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 112001221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112001221231) 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, 1274746 + ... + 1359771.

It is an arithmetic number, because the mean of its divisors is an integer number (9610721664).

Almost surely, 2^112001221221 is an apocalyptic number.

It is an amenable number.

112001221221 is a deficient number, since it is larger than the sum of its proper divisors (41770325403).

112001221221 is a wasteful number, since it uses less digits than its factorization.

112001221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634940.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 112001221221 its reverse (122122100211), we get a palindrome (234123321432).

The spelling of 112001221221 in words is "one hundred twelve billion, one million, two hundred twenty-one thousand, two hundred twenty-one".