2121323013320 has 64 divisors (see below), whose sum is σ = 5531659257600. Its totient is φ = 717066927360.

The previous prime is 2121323013311. The next prime is 2121323013379. The reversal of 2121323013320 is 233103231212.

It is a super-2 number, since 2×2121323013320² (a number of 25 digits) contains 22 as substring.

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, 53333315 + ... + 53373074.

It is an arithmetic number, because the mean of its divisors is an integer number (86432175900).

Almost surely, 2^{2121323013320} is an apocalyptic number.

2121323013320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121323013320 is an abundant number, since it is smaller than the sum of its proper divisors (3410336244280).

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

2121323013320 is a wasteful number, since it uses less digits than its factorization.

2121323013320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106706478 (or 106706474 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2121323013320 its reverse (233103231212), we get a palindrome (2354426244532).

The spelling of 2121323013320 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-three million, thirteen thousand, three hundred twenty".