20001100102210 has 32 divisors (see below), whose sum is σ = 39049493584752. Its totient is φ = 7346171627520.

The previous prime is 20001100102201. The next prime is 20001100102213. The reversal of 20001100102210 is 1220100110002.

It can be written as a sum of positive squares in 8 ways, for example, as 11162127314529 + 8838972787681 = 3340977^2 + 2973041^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (20001100102213) 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 15 ways as a sum of consecutive naturals, for example, 1434792177 + ... + 1434806116.

Almost surely, 2^{20001100102210} is an apocalyptic number.

20001100102210 is a deficient number, since it is larger than the sum of its proper divisors (19048393482542).

20001100102210 is a wasteful number, since it uses less digits than its factorization.

20001100102210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2869598358.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20001100102210 its reverse (1220100110002), we get a palindrome (21221200212212).

The spelling of 20001100102210 in words is "twenty trillion, one billion, one hundred million, one hundred two thousand, two hundred ten".