112021102222121 has 4 divisors (see below), whose sum is σ = 115883898850500. Its totient is φ = 108158305593744.

The previous prime is 112021102222103. The next prime is 112021102222157. The reversal of 112021102222121 is 121222201120211.

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 17954380782121 + 94066721440000 = 4237261^2 + 9698800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112021102222121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112021102222093 and 112021102222102.

It is not an unprimeable number, because it can be changed into a prime (112021102222171) 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, 1931398314146 + ... + 1931398314203.

It is an arithmetic number, because the mean of its divisors is an integer number (28970974712625).

Almost surely, 2^{112021102222121} is an apocalyptic number.

It is an amenable number.

112021102222121 is a deficient number, since it is larger than the sum of its proper divisors (3862796628379).

112021102222121 is an equidigital number, since it uses as much as digits as its factorization.

112021102222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862796628378.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 112021102222121 its reverse (121222201120211), we get a palindrome (233243303342332).

The spelling of 112021102222121 in words is "one hundred twelve trillion, twenty-one billion, one hundred two million, two hundred twenty-two thousand, one hundred twenty-one".