20021101100202 has 16 divisors (see below), whose sum is σ = 41124423881952. Its totient is φ = 6493330086480.

The previous prime is 20021101100201. The next prime is 20021101100261. The reversal of 20021101100202 is 20200110112002.

It is not an unprimeable number, because it can be changed into a prime (20021101100201) 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 7 ways as a sum of consecutive naturals, for example, 45092569824 + ... + 45092570267.

It is an arithmetic number, because the mean of its divisors is an integer number (2570276492622).

Almost surely, 2^{20021101100202} is an apocalyptic number.

20021101100202 is an abundant number, since it is smaller than the sum of its proper divisors (21103322781750).

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

20021101100202 is a wasteful number, since it uses less digits than its factorization.

20021101100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90185140133.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021101100202 its reverse (20200110112002), we get a palindrome (40221211212204).

The spelling of 20021101100202 in words is "twenty trillion, twenty-one billion, one hundred one million, one hundred thousand, two hundred two".