2223041521 has 2 divisors, whose sum is σ = 2223041522. Its totient is φ = 2223041520.

The previous prime is 2223041503. The next prime is 2223041543. The reversal of 2223041521 is 1251403222.

It is a happy number.

It is an a-pointer prime, because the next prime (2223041543) can be obtained adding 2223041521 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2193610896 + 29430625 = 46836^2 + 5425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223041521 - 2²⁹ = 1686170609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2223041492 and 2223041501.

It is not a weakly prime, because it can be changed into another prime (2223041501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111520760 + 1111520761.

It is an arithmetic number, because the mean of its divisors is an integer number (1111520761).

Almost surely, 2^2223041521 is an apocalyptic number.

It is an amenable number.

2223041521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223041521 is an equidigital number, since it uses as much as digits as its factorization.

2223041521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 2223041521 is about 47149.1412541098. The cubic root of 2223041521 is about 1305.1162329984.

Adding to 2223041521 its reverse (1251403222), we get a palindrome (3474444743).

The spelling of 2223041521 in words is "two billion, two hundred twenty-three million, forty-one thousand, five hundred twenty-one".