2001210002000 has 160 divisors (see below), whose sum is σ = 5357620554624. Its totient is φ = 716850816000.

The previous prime is 2001210001991. The next prime is 2001210002003. The reversal of 2001210002000 is 2000121002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001210002003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 795164 + ... + 2152836.

Almost surely, 2^{2001210002000} is an apocalyptic number.

2001210002000 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 2001210002000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2678810277312).

2001210002000 is an abundant number, since it is smaller than the sum of its proper divisors (3356410552624).

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

2001210002000 is a wasteful number, since it uses less digits than its factorization.

2001210002000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357774 (or 1357758 counting only the distinct ones).

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

Adding to 2001210002000 its reverse (2000121002), we get a palindrome (2003210123002).

The spelling of 2001210002000 in words is "two trillion, one billion, two hundred ten million, two thousand".