112221120100121 has 4 divisors (see below), whose sum is σ = 112223086292772. Its totient is φ = 112219153907472.

The previous prime is 112221120100049. The next prime is 112221120100123. The reversal of 112221120100121 is 121001021122211.

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 33704933304025 + 78516186796096 = 5805595^2 + 8860936^2 .

It is a cyclic number.

It is not a de Polignac number, because 112221120100121 - 2⁴⁶ = 41852375922457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112221120100121.

It is not an unprimeable number, because it can be changed into a prime (112221120100123) 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, 983010710 + ... + 983124863.

It is an arithmetic number, because the mean of its divisors is an integer number (28055771573193).

Almost surely, 2^{112221120100121} is an apocalyptic number.

It is an amenable number.

112221120100121 is a deficient number, since it is larger than the sum of its proper divisors (1966192651).

112221120100121 is an equidigital number, since it uses as much as digits as its factorization.

112221120100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966192650.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 112221120100121 its reverse (121001021122211), we get a palindrome (233222141222332).

The spelling of 112221120100121 in words is "one hundred twelve trillion, two hundred twenty-one billion, one hundred twenty million, one hundred thousand, one hundred twenty-one".