221021221010963 has 2 divisors, whose sum is σ = 221021221010964. Its totient is φ = 221021221010962.

The previous prime is 221021221010957. The next prime is 221021221011013. The reversal of 221021221010963 is 369010122120122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221021221010963 - 2¹² = 221021221006867 is a prime.

It is not a weakly prime, because it can be changed into another prime (221021221010363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510610505481 + 110510610505482.

It is an arithmetic number, because the mean of its divisors is an integer number (110510610505482).

Almost surely, 2^{221021221010963} is an apocalyptic number.

221021221010963 is a deficient number, since it is larger than the sum of its proper divisors (1).

221021221010963 is an equidigital number, since it uses as much as digits as its factorization.

221021221010963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 221021221010963 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred twenty-one million, ten thousand, nine hundred sixty-three".