1212112112013 has 24 divisors (see below), whose sum is σ = 1910408893536. Its totient is φ = 734454151200.

The previous prime is 1212112111999. The next prime is 1212112112033. The reversal of 1212112112013 is 3102112112121.

It is a happy number.

It is not a de Polignac number, because 1212112112013 - 2⁶ = 1212112111949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212112112033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 867295 + ... + 1782252.

It is an arithmetic number, because the mean of its divisors is an integer number (79600370564).

Almost surely, 2^{1212112112013} is an apocalyptic number.

It is an amenable number.

1212112112013 is a deficient number, since it is larger than the sum of its proper divisors (698296781523).

1212112112013 is a wasteful number, since it uses less digits than its factorization.

1212112112013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654185 (or 2654182 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1212112112013 its reverse (3102112112121), we get a palindrome (4314224224134).

The spelling of 1212112112013 in words is "one trillion, two hundred twelve billion, one hundred twelve million, one hundred twelve thousand, thirteen".