211321220203 has 2 divisors, whose sum is σ = 211321220204. Its totient is φ = 211321220202.

The previous prime is 211321220191. The next prime is 211321220233. The reversal of 211321220203 is 302022123112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211321220203 - 2²¹ = 211319123051 is a prime.

It is a super-2 number, since 2×211321220203² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211321220233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660610101 + 105660610102.

It is an arithmetic number, because the mean of its divisors is an integer number (105660610102).

Almost surely, 2^211321220203 is an apocalyptic number.

211321220203 is a deficient number, since it is larger than the sum of its proper divisors (1).

211321220203 is an equidigital number, since it uses as much as digits as its factorization.

211321220203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211321220203 its reverse (302022123112), we get a palindrome (513343343315).

The spelling of 211321220203 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred twenty thousand, two hundred three".