2031030321221 has 16 divisors (see below), whose sum is σ = 2221952463360. Its totient is φ = 1841162471280.

The previous prime is 2031030321149. The next prime is 2031030321259. The reversal of 2031030321221 is 1221230301302.

It is not a de Polignac number, because 2031030321221 - 2¹⁰ = 2031030320197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031030321193 and 2031030321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031030311221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5550050 + ... + 5904668.

It is an arithmetic number, because the mean of its divisors is an integer number (138872028960).

Almost surely, 2^{2031030321221} is an apocalyptic number.

It is an amenable number.

2031030321221 is a deficient number, since it is larger than the sum of its proper divisors (190922142139).

2031030321221 is a wasteful number, since it uses less digits than its factorization.

2031030321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356104.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2031030321221 its reverse (1221230301302), we get a palindrome (3252260622523).

The spelling of 2031030321221 in words is "two trillion, thirty-one billion, thirty million, three hundred twenty-one thousand, two hundred twenty-one".