20331303221 has 8 divisors (see below), whose sum is σ = 22221690624. Its totient is φ = 18518074560.

The previous prime is 20331303079. The next prime is 20331303281. The reversal of 20331303221 is 12230313302.

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 20331303221 - 2¹⁸ = 20331041077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20331303193 and 20331303202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331303281) 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 7 ways as a sum of consecutive naturals, for example, 19289135 + ... + 19290188.

It is an arithmetic number, because the mean of its divisors is an integer number (2777711328).

Almost surely, 2^20331303221 is an apocalyptic number.

It is an amenable number.

20331303221 is a deficient number, since it is larger than the sum of its proper divisors (1890387403).

20331303221 is a wasteful number, since it uses less digits than its factorization.

20331303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38579371.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20331303221 its reverse (12230313302), we get a palindrome (32561616523).

The spelling of 20331303221 in words is "twenty billion, three hundred thirty-one million, three hundred three thousand, two hundred twenty-one".