11230222021 has 2 divisors, whose sum is σ = 11230222022. Its totient is φ = 11230222020.

The previous prime is 11230222013. The next prime is 11230222033. The reversal of 11230222021 is 12022203211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9764404225 + 1465817796 = 98815^2 + 38286^2 .

It is a cyclic number.

It is not a de Polignac number, because 11230222021 - 2³ = 11230222013 is a prime.

It is a super-2 number, since 2×11230222021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11230221986 and 11230222004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11230222001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615111010 + 5615111011.

It is an arithmetic number, because the mean of its divisors is an integer number (5615111011).

Almost surely, 2^11230222021 is an apocalyptic number.

It is an amenable number.

11230222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11230222021 is an equidigital number, since it uses as much as digits as its factorization.

11230222021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11230222021 its reverse (12022203211), we get a palindrome (23252425232).

It can be divided in two parts, 11 and 230222021, that added together give a palindrome (230222032).

The spelling of 11230222021 in words is "eleven billion, two hundred thirty million, two hundred twenty-two thousand, twenty-one".