3421221247 has 2 divisors, whose sum is σ = 3421221248. Its totient is φ = 3421221246.

The previous prime is 3421221203. The next prime is 3421221257. The reversal of 3421221247 is 7421221243.

It is a strong prime.

It is an emirp because it is prime and its reverse (7421221243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3421221247 - 2¹⁹ = 3420696959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3421221257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710610623 + 1710610624.

It is an arithmetic number, because the mean of its divisors is an integer number (1710610624).

Almost surely, 2^3421221247 is an apocalyptic number.

3421221247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3421221247 is an equidigital number, since it uses as much as digits as its factorization.

3421221247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 28.

The square root of 3421221247 is about 58491.2065784251. The cubic root of 3421221247 is about 1506.8165681567.

The spelling of 3421221247 in words is "three billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred forty-seven".