3101321311220 has 48 divisors (see below), whose sum is σ = 7349839862400. Its totient is φ = 1088865160320.

The previous prime is 3101321311219. The next prime is 3101321311237. The reversal of 3101321311220 is 221131231013.

It is a happy number.

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 = 3101321311192 and 3101321311201.

It is a congruent number.

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, 243043880 + ... + 243056639.

It is an arithmetic number, because the mean of its divisors is an integer number (153121663800).

Almost surely, 2^{3101321311220} is an apocalyptic number.

It is an amenable number.

3101321311220 is an abundant number, since it is smaller than the sum of its proper divisors (4248518551180).

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

3101321311220 is a wasteful number, since it uses less digits than its factorization.

3101321311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486100568 (or 486100566 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3101321311220 its reverse (221131231013), we get a palindrome (3322452542233).

The spelling of 3101321311220 in words is "three trillion, one hundred one billion, three hundred twenty-one million, three hundred eleven thousand, two hundred twenty".