3221312002320 has 80 divisors (see below), whose sum is σ = 10098270276480. Its totient is φ = 849364657152.

The previous prime is 3221312002283. The next prime is 3221312002333. The reversal of 3221312002320 is 232002131223.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75383884 + ... + 75426603.

It is an arithmetic number, because the mean of its divisors is an integer number (126228378456).

Almost surely, 2^{3221312002320} is an apocalyptic number.

3221312002320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3221312002320 is an abundant number, since it is smaller than the sum of its proper divisors (6876958274160).

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

3221312002320 is a wasteful number, since it uses less digits than its factorization.

3221312002320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150810592 (or 150810586 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 3221312002320 its reverse (232002131223), we get a palindrome (3453314133543).

The spelling of 3221312002320 in words is "three trillion, two hundred twenty-one billion, three hundred twelve million, two thousand, three hundred twenty".