2101220313320 has 32 divisors (see below), whose sum is σ = 4763835378720. Its totient is φ = 834072183360.

The previous prime is 2101220313307. The next prime is 2101220313323. The reversal of 2101220313320 is 233130221012.

It is a super-3 number, since 3×2101220313320³ (a number of 38 digits) contains 333 as substring.

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 = 2101220313292 and 2101220313301.

It is not an unprimeable number, because it can be changed into a prime (2101220313323) 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, 200492882 + ... + 200503361.

It is an arithmetic number, because the mean of its divisors is an integer number (148869855585).

Almost surely, 2^{2101220313320} is an apocalyptic number.

2101220313320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101220313320 is an abundant number, since it is smaller than the sum of its proper divisors (2662615065400).

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

2101220313320 is a wasteful number, since it uses less digits than its factorization.

2101220313320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400996385 (or 400996381 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2101220313320 its reverse (233130221012), we get a palindrome (2334350534332).

The spelling of 2101220313320 in words is "two trillion, one hundred one billion, two hundred twenty million, three hundred thirteen thousand, three hundred twenty".