2031424031221 has 8 divisors (see below), whose sum is σ = 2196840925440. Its totient is φ = 1867314780912.

The previous prime is 2031424031179. The next prime is 2031424031227. The reversal of 2031424031221 is 1221304241302.

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 2031424031221 - 2⁹ = 2031424030709 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 (2031424031227) 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, 326907745 + ... + 326913958.

It is an arithmetic number, because the mean of its divisors is an integer number (274605115680).

Almost surely, 2^{2031424031221} is an apocalyptic number.

It is an amenable number.

2031424031221 is a deficient number, since it is larger than the sum of its proper divisors (165416894219).

2031424031221 is a wasteful number, since it uses less digits than its factorization.

2031424031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653821955.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 2031424031221 its reverse (1221304241302), we get a palindrome (3252728272523).

The spelling of 2031424031221 in words is "two trillion, thirty-one billion, four hundred twenty-four million, thirty-one thousand, two hundred twenty-one".