221536051401347 has 2 divisors, whose sum is σ = 221536051401348. Its totient is φ = 221536051401346.

The previous prime is 221536051401319. The next prime is 221536051401359. The reversal of 221536051401347 is 743104150635122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221536051401347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221536051401298 and 221536051401307.

It is not a weakly prime, because it can be changed into another prime (221536051401377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110768025700673 + 110768025700674.

It is an arithmetic number, because the mean of its divisors is an integer number (110768025700674).

Almost surely, 2^{221536051401347} is an apocalyptic number.

221536051401347 is a deficient number, since it is larger than the sum of its proper divisors (1).

221536051401347 is an equidigital number, since it uses as much as digits as its factorization.

221536051401347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 221536051401347 in words is "two hundred twenty-one trillion, five hundred thirty-six billion, fifty-one million, four hundred one thousand, three hundred forty-seven".