2101020000 has 360 divisors, whose sum is σ = 7348566456. Its totient is φ = 525312000.

The previous prime is 2101019993. The next prime is 2101020023. The reversal of 2101020000 is 201012.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 21659952 + ... + 21660048.

Almost surely, 2^2101020000 is an apocalyptic number.

2101020000 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 2101020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3674283228).

2101020000 is an abundant number, since it is smaller than the sum of its proper divisors (5247546456).

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

2101020000 is an equidigital number, since it uses as much as digits as its factorization.

2101020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 126 counting only the distinct ones).

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

The square root of 2101020000 is about 45836.8847108963. The cubic root of 2101020000 is about 1280.7864632933.

Adding to 2101020000 its reverse (201012), we get a palindrome (2101221012).

The spelling of 2101020000 in words is "two billion, one hundred one million, twenty thousand".