2001211000002 has 48 divisors (see below), whose sum is σ = 4496688810432. Its totient is φ = 667049469840.

The previous prime is 2001210999973. The next prime is 2001211000007. The reversal of 2001211000002 is 2000001121002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2001211000007) 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 23 ways as a sum of consecutive naturals, for example, 28649323 + ... + 28719089.

It is an arithmetic number, because the mean of its divisors is an integer number (93681016884).

Almost surely, 2^{2001211000002} is an apocalyptic number.

2001211000002 is an abundant number, since it is smaller than the sum of its proper divisors (2495477810430).

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

2001211000002 is an equidigital number, since it uses as much as digits as its factorization.

2001211000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128805 (or 128793 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2001211000002 its reverse (2000001121002), we get a palindrome (4001212121004).

The spelling of 2001211000002 in words is "two trillion, one billion, two hundred eleven million, two", and thus it is an aban number.