2021331000 has 128 divisors (see below), whose sum is σ = 6791803200. Its totient is φ = 497548800.

The previous prime is 2021330981. The next prime is 2021331007. The reversal of 2021331000 is 1331202.

It is a happy number.

It is a super-2 number, since 2×2021331000² = 8171558023122000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021331007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13086 + ... + 64914.

Almost surely, 2^2021331000 is an apocalyptic number.

2021331000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021331000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3395901600).

2021331000 is an abundant number, since it is smaller than the sum of its proper divisors (4770472200).

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

2021331000 is a wasteful number, since it uses less digits than its factorization.

2021331000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51866 (or 51852 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2021331000 is about 44959.2148507956. The cubic root of 2021331000 is about 1264.3844484982.

Adding to 2021331000 its reverse (1331202), we get a palindrome (2022662202).

The spelling of 2021331000 in words is "two billion, twenty-one million, three hundred thirty-one thousand".