221211022220203 has 2 divisors, whose sum is σ = 221211022220204. Its totient is φ = 221211022220202.

The previous prime is 221211022220183. The next prime is 221211022220213. The reversal of 221211022220203 is 302022220112122.

It is a happy number.

221211022220203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221211022220203 is a prime.

It is a super-2 number, since 2×221211022220203² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221211022220213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605511110101 + 110605511110102.

It is an arithmetic number, because the mean of its divisors is an integer number (110605511110102).

Almost surely, 2^{221211022220203} is an apocalyptic number.

221211022220203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211022220203 is an equidigital number, since it uses as much as digits as its factorization.

221211022220203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 221211022220203 its reverse (302022220112122), we get a palindrome (523233242332325).

The spelling of 221211022220203 in words is "two hundred twenty-one trillion, two hundred eleven billion, twenty-two million, two hundred twenty thousand, two hundred three".