20211100202 has 8 divisors (see below), whose sum is σ = 30321480612. Its totient is φ = 10103940000.

The previous prime is 20211100177. The next prime is 20211100207. The reversal of 20211100202 is 20200111202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19473923401 + 737176801 = 139549^2 + 27151^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20211100207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789299 + ... + 814502.

Almost surely, 2^20211100202 is an apocalyptic number.

20211100202 is a deficient number, since it is larger than the sum of its proper divisors (10110380410).

20211100202 is a wasteful number, since it uses less digits than its factorization.

20211100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610104.

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

Adding to 20211100202 its reverse (20200111202), we get a palindrome (40411211404).

The spelling of 20211100202 in words is "twenty billion, two hundred eleven million, one hundred thousand, two hundred two".