2001101221010 has 32 divisors (see below), whose sum is σ = 3814107039792. Its totient is φ = 753307648000.

The previous prime is 2001101220997. The next prime is 2001101221051. The reversal of 2001101221010 is 101221011002.

It can be written as a sum of positive squares in 8 ways, for example, as 1185596500201 + 815504720809 = 1088851^2 + 903053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001101220982 and 2001101221000.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2352344 + ... + 3087996.

Almost surely, 2^{2001101221010} is an apocalyptic number.

2001101221010 is a deficient number, since it is larger than the sum of its proper divisors (1813005818782).

2001101221010 is a wasteful number, since it uses less digits than its factorization.

2001101221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751678.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2001101221010 its reverse (101221011002), we get a palindrome (2102322232012).

The spelling of 2001101221010 in words is "two trillion, one billion, one hundred one million, two hundred twenty-one thousand, ten".