221113123123001 has 4 divisors (see below), whose sum is σ = 234119777424372. Its totient is φ = 208106468821632.

The previous prime is 221113123122979. The next prime is 221113123123033. The reversal of 221113123123001 is 100321321311122.

It is a happy number.

221113123123001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 189251884903225 + 31861238219776 = 13756885^2 + 5644576^2 .

It is a cyclic number.

It is not a de Polignac number, because 221113123123001 - 2¹⁰ = 221113123121977 is a prime.

It is a super-3 number, since 3×221113123123001³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221113123723001) 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, 6503327150660 + ... + 6503327150693.

It is an arithmetic number, because the mean of its divisors is an integer number (58529944356093).

Almost surely, 2^{221113123123001} is an apocalyptic number.

It is an amenable number.

221113123123001 is a deficient number, since it is larger than the sum of its proper divisors (13006654301371).

221113123123001 is a wasteful number, since it uses less digits than its factorization.

221113123123001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13006654301370.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 221113123123001 its reverse (100321321311122), we get a palindrome (321434444434123).

The spelling of 221113123123001 in words is "two hundred twenty-one trillion, one hundred thirteen billion, one hundred twenty-three million, one hundred twenty-three thousand, one".