221424301431211 has 2 divisors, whose sum is σ = 221424301431212. Its totient is φ = 221424301431210.

The previous prime is 221424301431191. The next prime is 221424301431283. The reversal of 221424301431211 is 112134103424122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221424301431211 - 2¹⁹ = 221424300906923 is a prime.

It is not a weakly prime, because it can be changed into another prime (221424301431511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110712150715605 + 110712150715606.

It is an arithmetic number, because the mean of its divisors is an integer number (110712150715606).

Almost surely, 2^{221424301431211} is an apocalyptic number.

221424301431211 is a deficient number, since it is larger than the sum of its proper divisors (1).

221424301431211 is an equidigital number, since it uses as much as digits as its factorization.

221424301431211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

Adding to 221424301431211 its reverse (112134103424122), we get a palindrome (333558404855333).

The spelling of 221424301431211 in words is "two hundred twenty-one trillion, four hundred twenty-four billion, three hundred one million, four hundred thirty-one thousand, two hundred eleven".