3321221121020 has 96 divisors (see below), whose sum is σ = 7730270311680. Its totient is φ = 1188481282560.

The previous prime is 3321221121007. The next prime is 3321221121073. The reversal of 3321221121020 is 201211221233.

It is a super-2 number, since 2×3321221121020² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3321221120983 and 3321221121001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6881171 + ... + 7347989.

It is an arithmetic number, because the mean of its divisors is an integer number (80523649080).

Almost surely, 2^{3321221121020} 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 3321221121020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3865135155840).

3321221121020 is an abundant number, since it is smaller than the sum of its proper divisors (4409049190660).

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

3321221121020 is a wasteful number, since it uses less digits than its factorization.

3321221121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467355 (or 467353 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 3321221121020 its reverse (201211221233), we get a palindrome (3522432342253).

The spelling of 3321221121020 in words is "three trillion, three hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, twenty".