201122403221 has 2 divisors, whose sum is σ = 201122403222. Its totient is φ = 201122403220.

The previous prime is 201122403211. The next prime is 201122403227. The reversal of 201122403221 is 122304221102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136171332196 + 64951071025 = 369014^2 + 254855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201122403221 is a prime.

It is a super-2 number, since 2×201122403221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201122403193 and 201122403202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201122403227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100561201610 + 100561201611.

It is an arithmetic number, because the mean of its divisors is an integer number (100561201611).

Almost surely, 2^201122403221 is an apocalyptic number.

It is an amenable number.

201122403221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201122403221 is an equidigital number, since it uses as much as digits as its factorization.

201122403221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201122403221 its reverse (122304221102), we get a palindrome (323426624323).

The spelling of 201122403221 in words is "two hundred one billion, one hundred twenty-two million, four hundred three thousand, two hundred twenty-one".