1222646473 has 2 divisors, whose sum is σ = 1222646474. Its totient is φ = 1222646472.

The previous prime is 1222646461. The next prime is 1222646539. The reversal of 1222646473 is 3746462221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 707719609 + 514926864 = 26603^2 + 22692^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222646473 - 2²⁹ = 685775561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1222646573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611323236 + 611323237.

It is an arithmetic number, because the mean of its divisors is an integer number (611323237).

Almost surely, 2^1222646473 is an apocalyptic number.

It is an amenable number.

1222646473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222646473 is an equidigital number, since it uses as much as digits as its factorization.

1222646473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 37.

The square root of 1222646473 is about 34966.3620212341. The cubic root of 1222646473 is about 1069.3018046817.

The spelling of 1222646473 in words is "one billion, two hundred twenty-two million, six hundred forty-six thousand, four hundred seventy-three".