11223030431621 has 2 divisors, whose sum is σ = 11223030431622. Its totient is φ = 11223030431620.

The previous prime is 11223030431507. The next prime is 11223030431633. The reversal of 11223030431621 is 12613403032211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9219421322500 + 2003609109121 = 3036350^2 + 1415489^2 .

It is a cyclic number.

It is not a de Polignac number, because 11223030431621 - 2¹⁰ = 11223030430597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11223030431651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611515215810 + 5611515215811.

It is an arithmetic number, because the mean of its divisors is an integer number (5611515215811).

Almost surely, 2^{11223030431621} is an apocalyptic number.

It is an amenable number.

11223030431621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11223030431621 is an equidigital number, since it uses as much as digits as its factorization.

11223030431621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 11223030431621 its reverse (12613403032211), we get a palindrome (23836433463832).

The spelling of 11223030431621 in words is "eleven trillion, two hundred twenty-three billion, thirty million, four hundred thirty-one thousand, six hundred twenty-one".