2113122123221 has 8 divisors (see below), whose sum is σ = 2164703825088. Its totient is φ = 2061542428000.

The previous prime is 2113122123199. The next prime is 2113122123227. The reversal of 2113122123221 is 1223212213112.

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

It is a cyclic number.

It is not a de Polignac number, because 2113122123221 - 2⁶ = 2113122123157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113122123227) 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, 1752266 + ... + 2701236.

It is an arithmetic number, because the mean of its divisors is an integer number (270587978136).

Almost surely, 2^{2113122123221} is an apocalyptic number.

It is an amenable number.

2113122123221 is a deficient number, since it is larger than the sum of its proper divisors (51581701867).

2113122123221 is an equidigital number, since it uses as much as digits as its factorization.

2113122123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003323.

The product of its digits is 576, while the sum is 23.

Adding to 2113122123221 its reverse (1223212213112), we get a palindrome (3336334336333).

The spelling of 2113122123221 in words is "two trillion, one hundred thirteen billion, one hundred twenty-two million, one hundred twenty-three thousand, two hundred twenty-one".