1216983559522 has 16 divisors (see below), whose sum is σ = 1870494444000. Its totient is φ = 593493273760.

The previous prime is 1216983559489. The next prime is 1216983559559. The reversal of 1216983559522 is 2259553896121.

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, 1653772 + ... + 2273527.

It is an arithmetic number, because the mean of its divisors is an integer number (116905902750).

Almost surely, 2^{1216983559522} is an apocalyptic number.

1216983559522 is a deficient number, since it is larger than the sum of its proper divisors (653510884478).

1216983559522 is a wasteful number, since it uses less digits than its factorization.

1216983559522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931121.

The product of its digits is 11664000, while the sum is 58.

The spelling of 1216983559522 in words is "one trillion, two hundred sixteen billion, nine hundred eighty-three million, five hundred fifty-nine thousand, five hundred twenty-two".