20331300003221 has 8 divisors (see below), whose sum is σ = 20362670651544. Its totient is φ = 20299930076160.

The previous prime is 20331300003191. The next prime is 20331300003229. The reversal of 20331300003221 is 12230000313302.

It can be written as a sum of positive squares in 4 ways, for example, as 6370323602500 + 13960976400721 = 2523950^2 + 3736439^2 .

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 20331300003221 - 2²² = 20331295808917 is a prime.

It is a super-2 number, since 2×20331300003221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20331300003193 and 20331300003202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331300003229) 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, 94238345 + ... + 94453841.

It is an arithmetic number, because the mean of its divisors is an integer number (2545333831443).

Almost surely, 2^{20331300003221} is an apocalyptic number.

It is an amenable number.

20331300003221 is a deficient number, since it is larger than the sum of its proper divisors (31370648323).

20331300003221 is a wasteful number, since it uses less digits than its factorization.

20331300003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360631.

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

Adding to 20331300003221 its reverse (12230000313302), we get a palindrome (32561300316523).

The spelling of 20331300003221 in words is "twenty trillion, three hundred thirty-one billion, three hundred million, three thousand, two hundred twenty-one".