201322021231 has 2 divisors, whose sum is σ = 201322021232. Its totient is φ = 201322021230.

The previous prime is 201322021223. The next prime is 201322021237. The reversal of 201322021231 is 132120223102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201322021231 - 2³ = 201322021223 is a prime.

It is a super-2 number, since 2×201322021231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201322021199 and 201322021208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201322021237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100661010615 + 100661010616.

It is an arithmetic number, because the mean of its divisors is an integer number (100661010616).

Almost surely, 2^201322021231 is an apocalyptic number.

201322021231 is a deficient number, since it is larger than the sum of its proper divisors (1).

201322021231 is an equidigital number, since it uses as much as digits as its factorization.

201322021231 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 201322021231 its reverse (132120223102), we get a palindrome (333442244333).

The spelling of 201322021231 in words is "two hundred one billion, three hundred twenty-two million, twenty-one thousand, two hundred thirty-one".