1216060606 has 4 divisors (see below), whose sum is σ = 1824090912. Its totient is φ = 608030302.

The previous prime is 1216060603. The next prime is 1216060607. The reversal of 1216060606 is 6060606121.

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

1216060606 is a modest number, since divided by 60606 gives 1216 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216060603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304015150 + ... + 304015153.

It is an arithmetic number, because the mean of its divisors is an integer number (456022728).

Almost surely, 2^1216060606 is an apocalyptic number.

1216060606 is a deficient number, since it is larger than the sum of its proper divisors (608030306).

1216060606 is an equidigital number, since it uses as much as digits as its factorization.

1216060606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608030305.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1216060606 is about 34872.0605356208. The cubic root of 1216060606 is about 1067.3783917765.

Adding to 1216060606 its reverse (6060606121), we get a palindrome (7276666727).

The spelling of 1216060606 in words is "one billion, two hundred sixteen million, sixty thousand, six hundred six".