221210219963 has 2 divisors, whose sum is σ = 221210219964. Its totient is φ = 221210219962.

The previous prime is 221210219953. The next prime is 221210219969. The reversal of 221210219963 is 369912012122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221210219963 - 2³² = 216915252667 is a prime.

It is a super-2 number, since 2×221210219963² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221210219969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605109981 + 110605109982.

It is an arithmetic number, because the mean of its divisors is an integer number (110605109982).

Almost surely, 2^221210219963 is an apocalyptic number.

221210219963 is a deficient number, since it is larger than the sum of its proper divisors (1).

221210219963 is an equidigital number, since it uses as much as digits as its factorization.

221210219963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 221210219963 in words is "two hundred twenty-one billion, two hundred ten million, two hundred nineteen thousand, nine hundred sixty-three".