421311252221219 has 2 divisors, whose sum is σ = 421311252221220. Its totient is φ = 421311252221218.

The previous prime is 421311252221207. The next prime is 421311252221351. The reversal of 421311252221219 is 912122252113124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421311252221219 is a prime.

It is a super-2 number, since 2×421311252221219² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421311252221819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210655626110609 + 210655626110610.

It is an arithmetic number, because the mean of its divisors is an integer number (210655626110610).

Almost surely, 2^{421311252221219} is an apocalyptic number.

421311252221219 is a deficient number, since it is larger than the sum of its proper divisors (1).

421311252221219 is an equidigital number, since it uses as much as digits as its factorization.

421311252221219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The spelling of 421311252221219 in words is "four hundred twenty-one trillion, three hundred eleven billion, two hundred fifty-two million, two hundred twenty-one thousand, two hundred nineteen".