221534403654043 has 2 divisors, whose sum is σ = 221534403654044. Its totient is φ = 221534403654042.

The previous prime is 221534403653963. The next prime is 221534403654059. The reversal of 221534403654043 is 340456304435122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221534403654043 - 2¹³ = 221534403645851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221534403653984 and 221534403654002.

It is not a weakly prime, because it can be changed into another prime (221534403654643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110767201827021 + 110767201827022.

It is an arithmetic number, because the mean of its divisors is an integer number (110767201827022).

Almost surely, 2^{221534403654043} is an apocalyptic number.

221534403654043 is a deficient number, since it is larger than the sum of its proper divisors (1).

221534403654043 is an equidigital number, since it uses as much as digits as its factorization.

221534403654043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4147200, while the sum is 46.

The spelling of 221534403654043 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred three million, six hundred fifty-four thousand, forty-three".