221468473 has 2 divisors, whose sum is σ = 221468474. Its totient is φ = 221468472.

The previous prime is 221468453. The next prime is 221468497. The reversal of 221468473 is 374864122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141419664 + 80048809 = 11892^2 + 8947^2 .

It is a cyclic number.

It is not a de Polignac number, because 221468473 - 2¹⁷ = 221337401 is a prime.

It is not a weakly prime, because it can be changed into another prime (221468413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110734236 + 110734237.

It is an arithmetic number, because the mean of its divisors is an integer number (110734237).

Almost surely, 2^221468473 is an apocalyptic number.

It is an amenable number.

221468473 is a deficient number, since it is larger than the sum of its proper divisors (1).

221468473 is an equidigital number, since it uses as much as digits as its factorization.

221468473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 37.

The square root of 221468473 is about 14881.8168581662. The cubic root of 221468473 is about 605.0212619170.

The spelling of 221468473 in words is "two hundred twenty-one million, four hundred sixty-eight thousand, four hundred seventy-three".