221434000493 has 2 divisors, whose sum is σ = 221434000494. Its totient is φ = 221434000492.

The previous prime is 221434000399. The next prime is 221434000519. The reversal of 221434000493 is 394000434122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209981148169 + 11452852324 = 458237^2 + 107018^2 .

It is a cyclic number.

It is not a de Polignac number, because 221434000493 - 2²⁸ = 221165565037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221434000393) 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, 110717000246 + 110717000247.

It is an arithmetic number, because the mean of its divisors is an integer number (110717000247).

Almost surely, 2^221434000493 is an apocalyptic number.

It is an amenable number.

221434000493 is a deficient number, since it is larger than the sum of its proper divisors (1).

221434000493 is an equidigital number, since it uses as much as digits as its factorization.

221434000493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 221434000493 in words is "two hundred twenty-one billion, four hundred thirty-four million, four hundred ninety-three", and thus it is an aban number.