2001211212010 has 16 divisors (see below), whose sum is σ = 3635227708200. Its totient is φ = 793140590016.

The previous prime is 2001211211971. The next prime is 2001211212019. The reversal of 2001211212010 is 102121121002.

It can be written as a sum of positive squares in 4 ways, for example, as 1244065852129 + 757145359881 = 1115377^2 + 870141^2 .

It is not an unprimeable number, because it can be changed into a prime (2001211212019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917985705 + ... + 917987884.

Almost surely, 2^{2001211212010} is an apocalyptic number.

2001211212010 is a deficient number, since it is larger than the sum of its proper divisors (1634016496190).

2001211212010 is a wasteful number, since it uses less digits than its factorization.

2001211212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835973705.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2001211212010 its reverse (102121121002), we get a palindrome (2103332333012).

The spelling of 2001211212010 in words is "two trillion, one billion, two hundred eleven million, two hundred twelve thousand, ten".