1220223361 has 8 divisors (see below), whose sum is σ = 1397596160. Its totient is φ = 1043614368.

The previous prime is 1220223349. The next prime is 1220223373. The reversal of 1220223361 is 1633220221.

It is an interprime number because it is at equal distance from previous prime (1220223349) and next prime (1220223373).

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

It is a cyclic number.

It is not a de Polignac number, because 1220223361 - 2⁷ = 1220223233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220223391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187521 + ... + 193918.

It is an arithmetic number, because the mean of its divisors is an integer number (174699520).

Almost surely, 2^1220223361 is an apocalyptic number.

It is an amenable number.

1220223361 is a deficient number, since it is larger than the sum of its proper divisors (177372799).

1220223361 is an equidigital number, since it uses as much as digits as its factorization.

1220223361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381903.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1220223361 is about 34931.6956502257. The cubic root of 1220223361 is about 1068.5949359700.

Adding to 1220223361 its reverse (1633220221), we get a palindrome (2853443582).

The spelling of 1220223361 in words is "one billion, two hundred twenty million, two hundred twenty-three thousand, three hundred sixty-one".