112220121223121 has 4 divisors (see below), whose sum is σ = 112840121893044. Its totient is φ = 111600120553200.

The previous prime is 112220121223087. The next prime is 112220121223123. The reversal of 112220121223121 is 121322121022211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39855989185600 + 72364132037521 = 6313160^2 + 8506711^2 .

It is a cyclic number.

It is not a de Polignac number, because 112220121223121 - 2³⁰ = 112219047481297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112220121223123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310000334690 + ... + 310000335051.

It is an arithmetic number, because the mean of its divisors is an integer number (28210030473261).

Almost surely, 2^{112220121223121} is an apocalyptic number.

It is an amenable number.

112220121223121 is a deficient number, since it is larger than the sum of its proper divisors (620000669923).

112220121223121 is an equidigital number, since it uses as much as digits as its factorization.

112220121223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620000669922.

The product of its (nonzero) digits is 384, while the sum is 23.

Adding to 112220121223121 its reverse (121322121022211), we get a palindrome (233542242245332).

The spelling of 112220121223121 in words is "one hundred twelve trillion, two hundred twenty billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred twenty-one".