2021102320 has 20 divisors (see below), whose sum is σ = 4699063080. Its totient is φ = 808440896.

The previous prime is 2021102269. The next prime is 2021102327. The reversal of 2021102320 is 232011202.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 2021102320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021102327) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12631810 + ... + 12631969.

It is an arithmetic number, because the mean of its divisors is an integer number (234953154).

Almost surely, 2^2021102320 is an apocalyptic number.

2021102320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021102320 is an abundant number, since it is smaller than the sum of its proper divisors (2677960760).

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

2021102320 is a wasteful number, since it uses less digits than its factorization.

2021102320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25263792 (or 25263786 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2021102320 is about 44956.6715849828. The cubic root of 2021102320 is about 1264.3367653395.

Adding to 2021102320 its reverse (232011202), we get a palindrome (2253113522).

The spelling of 2021102320 in words is "two billion, twenty-one million, one hundred two thousand, three hundred twenty".