20001100100010 has 64 divisors (see below), whose sum is σ = 48910179414528. Its totient is φ = 5232796534784.

The previous prime is 20001100099999. The next prime is 20001100100011. The reversal of 20001100100010 is 1000100110002.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (20001100100011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45035194 + ... + 45477146.

It is an arithmetic number, because the mean of its divisors is an integer number (764221553352).

Almost surely, 2^{20001100100010} is an apocalyptic number.

20001100100010 is an abundant number, since it is smaller than the sum of its proper divisors (28909079314518).

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

20001100100010 is a wasteful number, since it uses less digits than its factorization.

20001100100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470479.

The product of its (nonzero) digits is 2, while the sum is 6.

Adding to 20001100100010 its reverse (1000100110002), we get a palindrome (21001200210012).

The spelling of 20001100100010 in words is "twenty trillion, one billion, one hundred million, one hundred thousand, ten".