2021103312 has 40 divisors (see below), whose sum is σ = 5269993056. Its totient is φ = 667403136.

The previous prime is 2021103299. The next prime is 2021103407. The reversal of 2021103312 is 2133011202.

It is a junction number, because it is equal to n+sod(n) for n = 2021103291 and 2021103300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191623 + ... + 201894.

Almost surely, 2^2021103312 is an apocalyptic number.

It is an amenable number.

2021103312 is an abundant number, since it is smaller than the sum of its proper divisors (3248889744).

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

2021103312 is a wasteful number, since it uses less digits than its factorization.

2021103312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393635 (or 393629 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2021103312 is about 44956.6826178267. The cubic root of 2021103312 is about 1264.3369721939.

Adding to 2021103312 its reverse (2133011202), we get a palindrome (4154114514).

The spelling of 2021103312 in words is "two billion, twenty-one million, one hundred three thousand, three hundred twelve".