1243220222 has 8 divisors (see below), whose sum is σ = 1890376176. Its totient is φ = 613094832.

The previous prime is 1243220213. The next prime is 1243220243. The reversal of 1243220222 is 2220223421.

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

It is a junction number, because it is equal to n+sod(n) for n = 1243220194 and 1243220203.

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, 4257458 + ... + 4257749.

It is an arithmetic number, because the mean of its divisors is an integer number (236297022).

Almost surely, 2^1243220222 is an apocalyptic number.

1243220222 is a deficient number, since it is larger than the sum of its proper divisors (647155954).

1243220222 is an equidigital number, since it uses as much as digits as its factorization.

1243220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8515282.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1243220222 is about 35259.3281558228. The cubic root of 1243220222 is about 1075.2662681328.

Adding to 1243220222 its reverse (2220223421), we get a palindrome (3463443643).

The spelling of 1243220222 in words is "one billion, two hundred forty-three million, two hundred twenty thousand, two hundred twenty-two".