3121332220000 has 120 divisors (see below), whose sum is σ = 7680953583072. Its totient is φ = 1248206400000.

The previous prime is 3121332219997. The next prime is 3121332220003. The reversal of 3121332220000 is 222331213.

It is an interprime number because it is at equal distance from previous prime (3121332219997) and next prime (3121332220003).

It is a super-2 number, since 2×3121332220000² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3121332220000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121332220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 85401730 + ... + 85438270.

Almost surely, 2^{3121332220000} 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 3121332220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3840476791536).

3121332220000 is an abundant number, since it is smaller than the sum of its proper divisors (4559621363072).

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

3121332220000 is an equidigital number, since it uses as much as digits as its factorization.

3121332220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40842 (or 40819 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 3121332220000 its reverse (222331213), we get a palindrome (3121554551213).

The spelling of 3121332220000 in words is "three trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred twenty thousand".