202221221011 has 2 divisors, whose sum is σ = 202221221012. Its totient is φ = 202221221010.

The previous prime is 202221220991. The next prime is 202221221053. The reversal of 202221221011 is 110122122202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202221221011 - 2¹¹ = 202221218963 is a prime.

It is not a weakly prime, because it can be changed into another prime (202221221071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110610505 + 101110610506.

It is an arithmetic number, because the mean of its divisors is an integer number (101110610506).

Almost surely, 2^202221221011 is an apocalyptic number.

202221221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221221011 is an equidigital number, since it uses as much as digits as its factorization.

202221221011 is an evil number, because the sum of its binary digits is even.

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

Adding to 202221221011 its reverse (110122122202), we get a palindrome (312343343213).

The spelling of 202221221011 in words is "two hundred two billion, two hundred twenty-one million, two hundred twenty-one thousand, eleven".