1219780222 has 4 divisors (see below), whose sum is σ = 1829670336. Its totient is φ = 609890110.

The previous prime is 1219780207. The next prime is 1219780241. The reversal of 1219780222 is 2220879121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304945054 + ... + 304945057.

It is an arithmetic number, because the mean of its divisors is an integer number (457417584).

Almost surely, 2^1219780222 is an apocalyptic number.

1219780222 is a deficient number, since it is larger than the sum of its proper divisors (609890114).

1219780222 is an equidigital number, since it uses as much as digits as its factorization.

1219780222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609890113.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1219780222 is about 34925.3521385254. The cubic root of 1219780222 is about 1068.4655625450.

The spelling of 1219780222 in words is "one billion, two hundred nineteen million, seven hundred eighty thousand, two hundred twenty-two".