2100320012 has 96 divisors (see below), whose sum is σ = 4668088320. Its totient is φ = 806077440.

The previous prime is 2100320009. The next prime is 2100320023. The reversal of 2100320012 is 2100230012.

It is a happy number.

It is a super-2 number, since 2×2100320012² = 8822688305615360288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100319975 and 2100320002.

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, 979013 + ... + 981155.

It is an arithmetic number, because the mean of its divisors is an integer number (48625920).

Almost surely, 2^2100320012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100320012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2334044160).

2100320012 is an abundant number, since it is smaller than the sum of its proper divisors (2567768308).

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

2100320012 is a wasteful number, since it uses less digits than its factorization.

2100320012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271 (or 2269 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 2100320012 is about 45829.2484337241. The cubic root of 2100320012 is about 1280.6442094138.

Adding to 2100320012 its reverse (2100230012), we get a palindrome (4200550024).

Subtracting from 2100320012 its reverse (2100230012), we obtain a square (90000 = 300²).

The spelling of 2100320012 in words is "two billion, one hundred million, three hundred twenty thousand, twelve".