112122012121221 has 32 divisors (see below), whose sum is σ = 156368686618368. Its totient is φ = 71327409753600.

The previous prime is 112122012121187. The next prime is 112122012121237. The reversal of 112122012121221 is 122121210221211.

It is not a de Polignac number, because 112122012121221 - 2⁹ = 112122012120709 is a prime.

It is a super-2 number, since 2×112122012121221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112122012123221) 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 31 ways as a sum of consecutive naturals, for example, 47796871 + ... + 50087771.

It is an arithmetic number, because the mean of its divisors is an integer number (4886521456824).

Almost surely, 2^{112122012121221} is an apocalyptic number.

It is an amenable number.

112122012121221 is a deficient number, since it is larger than the sum of its proper divisors (44246674497147).

112122012121221 is a wasteful number, since it uses less digits than its factorization.

112122012121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292621.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 112122012121221 its reverse (122121210221211), we get a palindrome (234243222342432).

The spelling of 112122012121221 in words is "one hundred twelve trillion, one hundred twenty-two billion, twelve million, one hundred twenty-one thousand, two hundred twenty-one".