211102000220221 has 4 divisors (see below), whose sum is σ = 230293091149344. Its totient is φ = 191910909291100.

The previous prime is 211102000220149. The next prime is 211102000220269. The reversal of 211102000220221 is 122022000201112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211102000220221 - 2¹¹ = 211102000218173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211102000220195 and 211102000220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102000220021) 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, 9595545464545 + ... + 9595545464566.

It is an arithmetic number, because the mean of its divisors is an integer number (57573272787336).

Almost surely, 2^{211102000220221} is an apocalyptic number.

It is an amenable number.

211102000220221 is a deficient number, since it is larger than the sum of its proper divisors (19191090929123).

211102000220221 is a wasteful number, since it uses less digits than its factorization.

211102000220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19191090929122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211102000220221 its reverse (122022000201112), we get a palindrome (333124000421333).

The spelling of 211102000220221 in words is "two hundred eleven trillion, one hundred two billion, two hundred twenty thousand, two hundred twenty-one".