1216702612 has 12 divisors (see below), whose sum is σ = 2132555796. Its totient is φ = 607400960.

The previous prime is 1216702589. The next prime is 1216702637. The reversal of 1216702612 is 2162076121.

It can be written as a sum of positive squares in 2 ways, for example, as 1110488976 + 106213636 = 33324^2 + 10306^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234703 + ... + 239830.

It is an arithmetic number, because the mean of its divisors is an integer number (177712983).

Almost surely, 2^1216702612 is an apocalyptic number.

It is an amenable number.

1216702612 is a deficient number, since it is larger than the sum of its proper divisors (915853184).

1216702612 is a wasteful number, since it uses less digits than its factorization.

1216702612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475178 (or 475176 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1216702612 is about 34881.2644839604. The cubic root of 1216702612 is about 1067.5661956768.

Adding to 1216702612 its reverse (2162076121), we get a palindrome (3378778733).

The spelling of 1216702612 in words is "one billion, two hundred sixteen million, seven hundred two thousand, six hundred twelve".