112122001221 has 24 divisors (see below), whose sum is σ = 160755360480. Its totient is φ = 69477748704.

The previous prime is 112122001163. The next prime is 112122001223. The reversal of 112122001221 is 122100221211.

It is not a de Polignac number, because 112122001221 - 2⁹ = 112122000709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 112122001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112122001223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 919291 + ... + 1034088.

It is an arithmetic number, because the mean of its divisors is an integer number (6698140020).

Almost surely, 2^112122001221 is an apocalyptic number.

It is an amenable number.

112122001221 is a deficient number, since it is larger than the sum of its proper divisors (48633359259).

112122001221 is a wasteful number, since it uses less digits than its factorization.

112122001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953473 (or 1953454 counting only the distinct ones).

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

Adding to 112122001221 its reverse (122100221211), we get a palindrome (234222222432).

The spelling of 112122001221 in words is "one hundred twelve billion, one hundred twenty-two million, one thousand, two hundred twenty-one".