5421221243 has 2 divisors, whose sum is σ = 5421221244. Its totient is φ = 5421221242.

The previous prime is 5421221237. The next prime is 5421221249. The reversal of 5421221243 is 3421221245.

It is a balanced prime because it is at equal distance from previous prime (5421221237) and next prime (5421221249).

It is a cyclic number.

It is not a de Polignac number, because 5421221243 - 2²⁸ = 5152785787 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (5421221249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710610621 + 2710610622.

It is an arithmetic number, because the mean of its divisors is an integer number (2710610622).

Almost surely, 2^5421221243 is an apocalyptic number.

5421221243 is a deficient number, since it is larger than the sum of its proper divisors (1).

5421221243 is an equidigital number, since it uses as much as digits as its factorization.

5421221243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 5421221243 is about 73628.9429708182. The cubic root of 5421221243 is about 1756.7058349154.

Adding to 5421221243 its reverse (3421221245), we get a palindrome (8842442488).

The spelling of 5421221243 in words is "five billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred forty-three".