21202110200011 has 4 divisors (see below), whose sum is σ = 22833041753872. Its totient is φ = 19571178646152.

The previous prime is 21202110200009. The next prime is 21202110200081. The reversal of 21202110200011 is 11000201120212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21202110200011 - 2¹ = 21202110200009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1630931553847 = 21202110200011 / (2 + 1 + 2 + 0 + 2 + 1 + 1 + 0 + 2 + 0 + 0 + 0 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21202110199964 and 21202110200000.

It is not an unprimeable number, because it can be changed into a prime (21202110200081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 815465776911 + ... + 815465776936.

It is an arithmetic number, because the mean of its divisors is an integer number (5708260438468).

Almost surely, 2^{21202110200011} is an apocalyptic number.

21202110200011 is a deficient number, since it is larger than the sum of its proper divisors (1630931553861).

21202110200011 is a wasteful number, since it uses less digits than its factorization.

21202110200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630931553860.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21202110200011 its reverse (11000201120212), we get a palindrome (32202311320223).

The spelling of 21202110200011 in words is "twenty-one trillion, two hundred two billion, one hundred ten million, two hundred thousand, eleven".