1216344230212 has 48 divisors (see below), whose sum is σ = 2201131609600. Its totient is φ = 587519412480.

The previous prime is 1216344230207. The next prime is 1216344230221. The reversal of 1216344230212 is 2120324436121.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 331156408 + ... + 331160080.

Almost surely, 2^{1216344230212} is an apocalyptic number.

It is an amenable number.

1216344230212 is a deficient number, since it is larger than the sum of its proper divisors (984787379388).

1216344230212 is a wasteful number, since it uses less digits than its factorization.

1216344230212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7676 (or 7674 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 1216344230212 its reverse (2120324436121), we get a palindrome (3336668666333).

The spelling of 1216344230212 in words is "one trillion, two hundred sixteen billion, three hundred forty-four million, two hundred thirty thousand, two hundred twelve".