2010021000 has 128 divisors (see below), whose sum is σ = 6753801600. Its totient is φ = 494764800.

The previous prime is 2010020977. The next prime is 2010021007. The reversal of 2010021000 is 1200102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2010021000.

It is not an unprimeable number, because it can be changed into a prime (2010021007) 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, 13231 + ... + 64769.

It is an arithmetic number, because the mean of its divisors is an integer number (52764075).

Almost surely, 2^2010021000 is an apocalyptic number.

2010021000 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 2010021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3376900800).

2010021000 is an abundant number, since it is smaller than the sum of its proper divisors (4743780600).

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

2010021000 is a wasteful number, since it uses less digits than its factorization.

2010021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51576 (or 51562 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 2010021000 is about 44833.2577446699. The cubic root of 2010021000 is about 1262.0218232903.

Adding to 2010021000 its reverse (1200102), we get a palindrome (2011221102).

The spelling of 2010021000 in words is "two billion, ten million, twenty-one thousand".