1216662122 has 16 divisors (see below), whose sum is σ = 1966030920. Its totient is φ = 561349632.

The previous prime is 1216662101. The next prime is 1216662151. The reversal of 1216662122 is 2212666121.

It can be written as a sum of positive squares in 4 ways, for example, as 400360081 + 816302041 = 20009^2 + 28571^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100154 + ... + 111642.

Almost surely, 2^1216662122 is an apocalyptic number.

1216662122 is a deficient number, since it is larger than the sum of its proper divisors (749368798).

1216662122 is a wasteful number, since it uses less digits than its factorization.

1216662122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15577.

The product of its digits is 3456, while the sum is 29.

The square root of 1216662122 is about 34880.6840815945. The cubic root of 1216662122 is about 1067.5543532227.

The spelling of 1216662122 in words is "one billion, two hundred sixteen million, six hundred sixty-two thousand, one hundred twenty-two".