2221123121113 has 8 divisors (see below), whose sum is σ = 2392012526400. Its totient is φ = 2050238541648.

The previous prime is 2221123121083. The next prime is 2221123121123. The reversal of 2221123121113 is 3111213211222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221123121113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221123121123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220693 + ... + 2119186.

It is an arithmetic number, because the mean of its divisors is an integer number (299001565800).

Almost surely, 2^{2221123121113} is an apocalyptic number.

It is an amenable number.

2221123121113 is a deficient number, since it is larger than the sum of its proper divisors (170889405287).

2221123121113 is a wasteful number, since it uses less digits than its factorization.

2221123121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412911.

The product of its digits is 288, while the sum is 22.

Adding to 2221123121113 its reverse (3111213211222), we get a palindrome (5332336332335).

The spelling of 2221123121113 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred thirteen".