3220421287 has 2 divisors, whose sum is σ = 3220421288. Its totient is φ = 3220421286.

The previous prime is 3220421227. The next prime is 3220421297. The reversal of 3220421287 is 7821240223.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3220421287 - 2⁷ = 3220421159 is a prime.

It is a super-2 number, since 2×3220421287² = 20742226531525472738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3220421227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610210643 + 1610210644.

It is an arithmetic number, because the mean of its divisors is an integer number (1610210644).

Almost surely, 2^3220421287 is an apocalyptic number.

3220421287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220421287 is an equidigital number, since it uses as much as digits as its factorization.

3220421287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 3220421287 is about 56748.7558189605. The cubic root of 3220421287 is about 1476.7406491771.

The spelling of 3220421287 in words is "three billion, two hundred twenty million, four hundred twenty-one thousand, two hundred eighty-seven".