221002100207963 has 2 divisors, whose sum is σ = 221002100207964. Its totient is φ = 221002100207962.

The previous prime is 221002100207953. The next prime is 221002100207969. The reversal of 221002100207963 is 369702001200122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221002100207963 - 2⁶ = 221002100207899 is a prime.

It is not a weakly prime, because it can be changed into another prime (221002100207969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501050103981 + 110501050103982.

It is an arithmetic number, because the mean of its divisors is an integer number (110501050103982).

Almost surely, 2^{221002100207963} is an apocalyptic number.

221002100207963 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002100207963 is an equidigital number, since it uses as much as digits as its factorization.

221002100207963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 221002100207963 in words is "two hundred twenty-one trillion, two billion, one hundred million, two hundred seven thousand, nine hundred sixty-three".