2001210020000 has 60 divisors (see below), whose sum is σ = 4923276879906. Its totient is φ = 800484000000.

The previous prime is 2001210019999. The next prime is 2001210020039. The reversal of 2001210020000 is 200121002.

It can be written as a sum of positive squares in 5 ways, for example, as 173965736464 + 1827244283536 = 417092^2 + 1351756^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2001210020000.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 50010251 + ... + 50050250.

Almost surely, 2^{2001210020000} is an apocalyptic number.

2001210020000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001210020000 is an abundant number, since it is smaller than the sum of its proper divisors (2922066859906).

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

2001210020000 is an equidigital number, since it uses as much as digits as its factorization.

2001210020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100060531 (or 100060508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 2001210020000 its reverse (200121002), we get a palindrome (2001410141002).

2001210020000 divided by its reverse (200121002) gives a 4-th power (10000 = 10⁴).

The spelling of 2001210020000 in words is "two trillion, one billion, two hundred ten million, twenty thousand".