1222781306 has 8 divisors (see below), whose sum is σ = 1840653984. Its totient is φ = 609229980.

The previous prime is 1222781297. The next prime is 1222781311. The reversal of 1222781306 is 6031872221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079630 + ... + 1080761.

It is an arithmetic number, because the mean of its divisors is an integer number (230081748).

Almost surely, 2^1222781306 is an apocalyptic number.

1222781306 is a deficient number, since it is larger than the sum of its proper divisors (617872678).

1222781306 is a wasteful number, since it uses less digits than its factorization.

1222781306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160676.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1222781306 is about 34968.2900068047. The cubic root of 1222781306 is about 1069.3411106391.

The spelling of 1222781306 in words is "one billion, two hundred twenty-two million, seven hundred eighty-one thousand, three hundred six".