20021100100202 has 8 divisors (see below), whose sum is σ = 30411797620800. Its totient is φ = 9883834226604.

The previous prime is 20021100100151. The next prime is 20021100100223. The reversal of 20021100100202 is 20200100112002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63357911552 + ... + 63357911867.

It is an arithmetic number, because the mean of its divisors is an integer number (3801474702600).

Almost surely, 2^{20021100100202} is an apocalyptic number.

20021100100202 is a deficient number, since it is larger than the sum of its proper divisors (10390697520598).

20021100100202 is a wasteful number, since it uses less digits than its factorization.

20021100100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126715823500.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20021100100202 its reverse (20200100112002), we get a palindrome (40221200212204).

The spelling of 20021100100202 in words is "twenty trillion, twenty-one billion, one hundred million, one hundred thousand, two hundred two".