234334221421 has 2 divisors, whose sum is σ = 234334221422. Its totient is φ = 234334221420.

The previous prime is 234334221409. The next prime is 234334221427. The reversal of 234334221421 is 124122433432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118590696900 + 115743524521 = 344370^2 + 340211^2 .

It is a cyclic number.

It is not a de Polignac number, because 234334221421 - 2¹⁵ = 234334188653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234334221427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117167110710 + 117167110711.

It is an arithmetic number, because the mean of its divisors is an integer number (117167110711).

Almost surely, 2^234334221421 is an apocalyptic number.

It is an amenable number.

234334221421 is a deficient number, since it is larger than the sum of its proper divisors (1).

234334221421 is an equidigital number, since it uses as much as digits as its factorization.

234334221421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 31.

Adding to 234334221421 its reverse (124122433432), we get a palindrome (358456654853).

The spelling of 234334221421 in words is "two hundred thirty-four billion, three hundred thirty-four million, two hundred twenty-one thousand, four hundred twenty-one".