2331031201221 has 8 divisors (see below), whose sum is σ = 3215215450080. Its totient is φ = 1500433876592.

The previous prime is 2331031201193. The next prime is 2331031201223. The reversal of 2331031201221 is 1221021301332.

2331031201221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2331031201221 - 2⁹ = 2331031200709 is a prime.

It is a super-2 number, since 2×2331031201221² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331031201223) 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, 13396730955 + ... + 13396731128.

It is an arithmetic number, because the mean of its divisors is an integer number (401901931260).

Almost surely, 2^{2331031201221} is an apocalyptic number.

It is an amenable number.

2331031201221 is a deficient number, since it is larger than the sum of its proper divisors (884184248859).

2331031201221 is a wasteful number, since it uses less digits than its factorization.

2331031201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26793462115.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2331031201221 its reverse (1221021301332), we get a palindrome (3552052502553).

The spelling of 2331031201221 in words is "two trillion, three hundred thirty-one billion, thirty-one million, two hundred one thousand, two hundred twenty-one".