112203121221 has 24 divisors (see below), whose sum is σ = 164713932864. Its totient is φ = 73586963520.

The previous prime is 112203121181. The next prime is 112203121237. The reversal of 112203121221 is 122121302211.

112203121221 is a `hidden beast` number, since 11 + 220 + 312 + 122 + 1 = 666.

It is not a de Polignac number, because 112203121221 - 2⁶ = 112203121157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 112203121194 and 112203121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112203821221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99910 + ... + 484136.

It is an arithmetic number, because the mean of its divisors is an integer number (6863080536).

Almost surely, 2^112203121221 is an apocalyptic number.

It is an amenable number.

112203121221 is a deficient number, since it is larger than the sum of its proper divisors (52510811643).

112203121221 is a wasteful number, since it uses less digits than its factorization.

112203121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384761 (or 384758 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 112203121221 its reverse (122121302211), we get a palindrome (234324423432).

The spelling of 112203121221 in words is "one hundred twelve billion, two hundred three million, one hundred twenty-one thousand, two hundred twenty-one".