2031232212221 has 8 divisors (see below), whose sum is σ = 2075701929600. Its totient is φ = 1986814662048.

The previous prime is 2031232212199. The next prime is 2031232212223. The reversal of 2031232212221 is 1222122321302.

It is a happy number.

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

It is not a de Polignac number, because 2031232212221 - 2³⁰ = 2030158470397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031232212223) 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, 12963071 + ... + 13118828.

It is an arithmetic number, because the mean of its divisors is an integer number (259462741200).

Almost surely, 2^{2031232212221} is an apocalyptic number.

It is an amenable number.

2031232212221 is a deficient number, since it is larger than the sum of its proper divisors (44469717379).

2031232212221 is a wasteful number, since it uses less digits than its factorization.

2031232212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26083603.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2031232212221 its reverse (1222122321302), we get a palindrome (3253354533523).

The spelling of 2031232212221 in words is "two trillion, thirty-one billion, two hundred thirty-two million, two hundred twelve thousand, two hundred twenty-one".