331000111120220 has 96 divisors (see below), whose sum is σ = 750409690504320. Its totient is φ = 122264019046400.

The previous prime is 331000111120207. The next prime is 331000111120223. The reversal of 331000111120220 is 22021111000133.

It is a super-2 number, since 2×331000111120220² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331000111120223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129910520 + ... + 132433920.

It is an arithmetic number, because the mean of its divisors is an integer number (7816767609420).

Almost surely, 2^{331000111120220} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331000111120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375204845252160).

331000111120220 is an abundant number, since it is smaller than the sum of its proper divisors (419409579384100).

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

331000111120220 is a wasteful number, since it uses less digits than its factorization.

331000111120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533295 (or 2533293 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 331000111120220 its reverse (22021111000133), we get a palindrome (353021222120353).

The spelling of 331000111120220 in words is "three hundred thirty-one trillion, one hundred eleven million, one hundred twenty thousand, two hundred twenty".