12212236555 has 16 divisors (see below), whose sum is σ = 14757027264. Its totient is φ = 9701677440.

The previous prime is 12212236523. The next prime is 12212236559. The reversal of 12212236555 is 55563221221.

It is not a de Polignac number, because 12212236555 - 2⁵ = 12212236523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12212236555.

It is not an unprimeable number, because it can be changed into a prime (12212236559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905965 + ... + 919345.

It is an arithmetic number, because the mean of its divisors is an integer number (922314204).

Almost surely, 2^12212236555 is an apocalyptic number.

12212236555 is a deficient number, since it is larger than the sum of its proper divisors (2544790709).

12212236555 is a wasteful number, since it uses less digits than its factorization.

12212236555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14646.

The product of its digits is 36000, while the sum is 34.

Adding to 12212236555 its reverse (55563221221), we get a palindrome (67775457776).

The spelling of 12212236555 in words is "twelve billion, two hundred twelve million, two hundred thirty-six thousand, five hundred fifty-five".