1215560222 has 4 divisors (see below), whose sum is σ = 1823340336. Its totient is φ = 607780110.

The previous prime is 1215560221. The next prime is 1215560243. The reversal of 1215560222 is 2220655121.

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

It is a junction number, because it is equal to n+sod(n) for n = 1215560191 and 1215560200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215560221) by changing a digit.

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, 303890054 + ... + 303890057.

It is an arithmetic number, because the mean of its divisors is an integer number (455835084).

Almost surely, 2^1215560222 is an apocalyptic number.

1215560222 is a deficient number, since it is larger than the sum of its proper divisors (607780114).

1215560222 is an equidigital number, since it uses as much as digits as its factorization.

1215560222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607780113.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1215560222 is about 34864.8852285505. The cubic root of 1215560222 is about 1067.2319702521.

The spelling of 1215560222 in words is "one billion, two hundred fifteen million, five hundred sixty thousand, two hundred twenty-two".