1222893566 has 4 divisors (see below), whose sum is σ = 1834340352. Its totient is φ = 611446782.

The previous prime is 1222893533. The next prime is 1222893569. The reversal of 1222893566 is 6653982221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6653982221 = 12641 ⋅526381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222893569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305723390 + ... + 305723393.

It is an arithmetic number, because the mean of its divisors is an integer number (458585088).

Almost surely, 2^1222893566 is an apocalyptic number.

1222893566 is a deficient number, since it is larger than the sum of its proper divisors (611446786).

1222893566 is an equidigital number, since it uses as much as digits as its factorization.

1222893566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611446785.

The product of its digits is 311040, while the sum is 44.

The square root of 1222893566 is about 34969.8951385331. The cubic root of 1222893566 is about 1069.3738340048.

The spelling of 1222893566 in words is "one billion, two hundred twenty-two million, eight hundred ninety-three thousand, five hundred sixty-six".