221421333014111 has 2 divisors, whose sum is σ = 221421333014112. Its totient is φ = 221421333014110.

The previous prime is 221421333014039. The next prime is 221421333014131. The reversal of 221421333014111 is 111410333124122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221421333014111 - 2¹⁰ = 221421333013087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221421333014131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110710666507055 + 110710666507056.

It is an arithmetic number, because the mean of its divisors is an integer number (110710666507056).

Almost surely, 2^{221421333014111} is an apocalyptic number.

221421333014111 is a deficient number, since it is larger than the sum of its proper divisors (1).

221421333014111 is an equidigital number, since it uses as much as digits as its factorization.

221421333014111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 221421333014111 its reverse (111410333124122), we get a palindrome (332831666138233).

The spelling of 221421333014111 in words is "two hundred twenty-one trillion, four hundred twenty-one billion, three hundred thirty-three million, fourteen thousand, one hundred eleven".