20001101211210 has 64 divisors (see below), whose sum is σ = 54867459981312. Its totient is φ = 4571072222016.

The previous prime is 20001101211209. The next prime is 20001101211233. The reversal of 20001101211210 is 1211210110002.

It is a super-2 number, since 2×20001101211210² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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, 4750314 + ... + 7909973.

It is an arithmetic number, because the mean of its divisors is an integer number (857304062208).

Almost surely, 2^{20001101211210} is an apocalyptic number.

20001101211210 is an abundant number, since it is smaller than the sum of its proper divisors (34866358770102).

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

20001101211210 is a wasteful number, since it uses less digits than its factorization.

20001101211210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12667827.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20001101211210 its reverse (1211210110002), we get a palindrome (21212311321212).

The spelling of 20001101211210 in words is "twenty trillion, one billion, one hundred one million, two hundred eleven thousand, two hundred ten".