1305220222 has 8 divisors (see below), whose sum is σ = 1958725656. Its totient is φ = 652311672.

The previous prime is 1305220171. The next prime is 1305220247. The reversal of 1305220222 is 2220225031.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1305220222.

It is a congruent number.

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, 143713 + ... + 152524.

It is an arithmetic number, because the mean of its divisors is an integer number (244840707).

Almost surely, 2^1305220222 is an apocalyptic number.

1305220222 is a deficient number, since it is larger than the sum of its proper divisors (653505434).

1305220222 is a wasteful number, since it uses less digits than its factorization.

1305220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298442.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1305220222 is about 36127.8316814060. The cubic root of 1305220222 is about 1092.8517815603.

Adding to 1305220222 its reverse (2220225031), we get a palindrome (3525445253).

The spelling of 1305220222 in words is "one billion, three hundred five million, two hundred twenty thousand, two hundred twenty-two".