1220221122 has 16 divisors (see below), whose sum is σ = 2449517760. Its totient is φ = 405227792.

The previous prime is 1220221111. The next prime is 1220221127. The reversal of 1220221122 is 2211220221.

It is not an unprimeable number, because it can be changed into a prime (1220221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376398 + ... + 379625.

It is an arithmetic number, because the mean of its divisors is an integer number (153094860).

Almost surely, 2^1220221122 is an apocalyptic number.

1220221122 is an abundant number, since it is smaller than the sum of its proper divisors (1229296638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220221122 is a wasteful number, since it uses less digits than its factorization.

1220221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756297.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1220221122 is about 34931.6636019529. The cubic root of 1220221122 is about 1068.5942823777.

Adding to 1220221122 its reverse (2211220221), we get a palindrome (3431441343).

Subtracting 1220221122 from its reverse (2211220221), we obtain a palindrome (990999099).

The spelling of 1220221122 in words is "one billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twenty-two".