20331333013220 has 24 divisors (see below), whose sum is σ = 43280673294264. Its totient is φ = 8021128640256.

The previous prime is 20331333013219. The next prime is 20331333013253. The reversal of 20331333013220 is 2231033313302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8141514915556 + 12189818097664 = 2853334^2 + 3491392^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20331333013220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6962783819 + ... + 6962786738.

It is an arithmetic number, because the mean of its divisors is an integer number (1803361387261).

Almost surely, 2^{20331333013220} is an apocalyptic number.

20331333013220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331333013220 is an abundant number, since it is smaller than the sum of its proper divisors (22949340281044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20331333013220 is a wasteful number, since it uses less digits than its factorization.

20331333013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13925570639 (or 13925570637 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 20331333013220 its reverse (2231033313302), we get a palindrome (22562366326522).

The spelling of 20331333013220 in words is "twenty trillion, three hundred thirty-one billion, three hundred thirty-three million, thirteen thousand, two hundred twenty".