221211220963 has 2 divisors, whose sum is σ = 221211220964. Its totient is φ = 221211220962.

The previous prime is 221211220949. The next prime is 221211221047. The reversal of 221211220963 is 369022112122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221211220963 is a prime.

It is not a weakly prime, because it can be changed into another prime (221211220063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605610481 + 110605610482.

It is an arithmetic number, because the mean of its divisors is an integer number (110605610482).

Almost surely, 2^221211220963 is an apocalyptic number.

221211220963 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211220963 is an equidigital number, since it uses as much as digits as its factorization.

221211220963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 221211220963 in words is "two hundred twenty-one billion, two hundred eleven million, two hundred twenty thousand, nine hundred sixty-three".