3321320221212 has 24 divisors (see below), whose sum is σ = 8856853923456. Its totient is φ = 948948634608.

The previous prime is 3321320221199. The next prime is 3321320221217. The reversal of 3321320221212 is 2121220231233.

It is a super-2 number, since 2×3321320221212² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321320221217) 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, 19769763138 + ... + 19769763305.

It is an arithmetic number, because the mean of its divisors is an integer number (369035580144).

Almost surely, 2^{3321320221212} is an apocalyptic number.

It is an amenable number.

3321320221212 is an abundant number, since it is smaller than the sum of its proper divisors (5535533702244).

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

3321320221212 is a wasteful number, since it uses less digits than its factorization.

3321320221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39539526457 (or 39539526455 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 3321320221212 its reverse (2121220231233), we get a palindrome (5442540452445).

The spelling of 3321320221212 in words is "three trillion, three hundred twenty-one billion, three hundred twenty million, two hundred twenty-one thousand, two hundred twelve".