3121122013320 has 128 divisors (see below), whose sum is σ = 9411423436800. Its totient is φ = 828032265984.

The previous prime is 3121122013301. The next prime is 3121122013351. The reversal of 3121122013320 is 233102211213.

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, 42324241 + ... + 42397919.

It is an arithmetic number, because the mean of its divisors is an integer number (73526745600).

Almost surely, 2^{3121122013320} is an apocalyptic number.

3121122013320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121122013320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4705711718400).

3121122013320 is an abundant number, since it is smaller than the sum of its proper divisors (6290301423480).

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

3121122013320 is a wasteful number, since it uses less digits than its factorization.

3121122013320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75499 (or 75495 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 3121122013320 its reverse (233102211213), we get a palindrome (3354224224533).

The spelling of 3121122013320 in words is "three trillion, one hundred twenty-one billion, one hundred twenty-two million, thirteen thousand, three hundred twenty".