20021102100010 has 32 divisors (see below), whose sum is σ = 41383330660800. Its totient is φ = 6897221775360.

The previous prime is 20021102099969. The next prime is 20021102100049. The reversal of 20021102100010 is 1000120112002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20021102100010.

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, 4789735255 + ... + 4789739434.

It is an arithmetic number, because the mean of its divisors is an integer number (1293229083150).

Almost surely, 2^{20021102100010} is an apocalyptic number.

20021102100010 is an abundant number, since it is smaller than the sum of its proper divisors (21362228560790).

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

20021102100010 is a wasteful number, since it uses less digits than its factorization.

20021102100010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9579474726.

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

Adding to 20021102100010 its reverse (1000120112002), we get a palindrome (21021222212012).

The spelling of 20021102100010 in words is "twenty trillion, twenty-one billion, one hundred two million, one hundred thousand, ten".