2021323100 has 36 divisors (see below), whose sum is σ = 4429721688. Its totient is φ = 800520000.

The previous prime is 2021323093. The next prime is 2021323121. The reversal of 2021323100 is 13231202.

It is a happy number.

It is a super-2 number, since 2×2021323100² = 8171494149187220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89966 + ... + 110165.

Almost surely, 2^2021323100 is an apocalyptic number.

2021323100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021323100 is an abundant number, since it is smaller than the sum of its proper divisors (2408398588).

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

2021323100 is a wasteful number, since it uses less digits than its factorization.

2021323100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200246 (or 200239 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2021323100 is about 44959.1269933036. The cubic root of 2021323100 is about 1264.3828012914.

Adding to 2021323100 its reverse (13231202), we get a palindrome (2034554302).

The spelling of 2021323100 in words is "two billion, twenty-one million, three hundred twenty-three thousand, one hundred".