2203224023521 has 2 divisors, whose sum is σ = 2203224023522. Its totient is φ = 2203224023520.

The previous prime is 2203224023471. The next prime is 2203224023557. The reversal of 2203224023521 is 1253204223022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1716857263521 + 486366760000 = 1310289^2 + 697400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203224023521 - 2²¹ = 2203221926369 is a prime.

It is a super-2 number, since 2×2203224023521² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2203224023521.

It is not a weakly prime, because it can be changed into another prime (2203224023921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101612011760 + 1101612011761.

It is an arithmetic number, because the mean of its divisors is an integer number (1101612011761).

Almost surely, 2^{2203224023521} is an apocalyptic number.

It is an amenable number.

2203224023521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2203224023521 is an equidigital number, since it uses as much as digits as its factorization.

2203224023521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 2203224023521 its reverse (1253204223022), we get a palindrome (3456428246543).

The spelling of 2203224023521 in words is "two trillion, two hundred three billion, two hundred twenty-four million, twenty-three thousand, five hundred twenty-one".