1311204224212 has 12 divisors (see below), whose sum is σ = 2303749256256. Its totient is φ = 652990151000.

The previous prime is 1311204224207. The next prime is 1311204224219. The reversal of 1311204224212 is 2124224021131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311204224219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652989148 + ... + 652991155.

It is an arithmetic number, because the mean of its divisors is an integer number (191979104688).

Almost surely, 2^{1311204224212} is an apocalyptic number.

It is an amenable number.

1311204224212 is a deficient number, since it is larger than the sum of its proper divisors (992545032044).

1311204224212 is a wasteful number, since it uses less digits than its factorization.

1311204224212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305980558 (or 1305980556 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 1311204224212 its reverse (2124224021131), we get a palindrome (3435428245343).

The spelling of 1311204224212 in words is "one trillion, three hundred eleven billion, two hundred four million, two hundred twenty-four thousand, two hundred twelve".