112221012210121 has 4 divisors (see below), whose sum is σ = 112702647455892. Its totient is φ = 111739376964352.

The previous prime is 112221012210113. The next prime is 112221012210149. The reversal of 112221012210121 is 121012210122211.

It is a happy number.

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 24732320385600 + 87488691824521 = 4973160^2 + 9353539^2 .

It is a cyclic number.

It is not a de Polignac number, because 112221012210121 - 2³ = 112221012210113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112221012810121) 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, 240817622536 + ... + 240817623001.

It is an arithmetic number, because the mean of its divisors is an integer number (28175661863973).

Almost surely, 2^{112221012210121} is an apocalyptic number.

It is an amenable number.

112221012210121 is a deficient number, since it is larger than the sum of its proper divisors (481635245771).

112221012210121 is an equidigital number, since it uses as much as digits as its factorization.

112221012210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481635245770.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 112221012210121 its reverse (121012210122211), we get a palindrome (233233222332332).

The spelling of 112221012210121 in words is "one hundred twelve trillion, two hundred twenty-one billion, twelve million, two hundred ten thousand, one hundred twenty-one".