201220221011 has 2 divisors, whose sum is σ = 201220221012. Its totient is φ = 201220221010.

The previous prime is 201220220963. The next prime is 201220221017. The reversal of 201220221011 is 110122022102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201220221011 - 2²² = 201216026707 is a prime.

It is a super-3 number, since 3×201220221011³ (a number of 35 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (201220221017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610110505 + 100610110506.

It is an arithmetic number, because the mean of its divisors is an integer number (100610110506).

Almost surely, 2^201220221011 is an apocalyptic number.

201220221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220221011 is an equidigital number, since it uses as much as digits as its factorization.

201220221011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201220221011 its reverse (110122022102), we get a palindrome (311342243113).

It can be divided in two parts, 20122022101 and 1, that added together give a palindrome (20122022102).

The spelling of 201220221011 in words is "two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, eleven".