2031321133221 has 8 divisors (see below), whose sum is σ = 2708435013120. Its totient is φ = 1354210671072.

The previous prime is 2031321133211. The next prime is 2031321133271. The reversal of 2031321133221 is 1223311231302.

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

It is not a de Polignac number, because 2031321133221 - 2¹⁷ = 2031321002149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2031321133191 and 2031321133200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031321133201) 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, 1330681 + ... + 2415233.

It is an arithmetic number, because the mean of its divisors is an integer number (338554376640).

Almost surely, 2^{2031321133221} is an apocalyptic number.

It is an amenable number.

2031321133221 is a deficient number, since it is larger than the sum of its proper divisors (677113879899).

2031321133221 is a wasteful number, since it uses less digits than its factorization.

2031321133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708875.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2031321133221 its reverse (1223311231302), we get a palindrome (3254632364523).

The spelling of 2031321133221 in words is "two trillion, thirty-one billion, three hundred twenty-one million, one hundred thirty-three thousand, two hundred twenty-one".