1212112212013 has 4 divisors (see below), whose sum is σ = 1212142677120. Its totient is φ = 1212081746908.

The previous prime is 1212112211953. The next prime is 1212112212029. The reversal of 1212112212013 is 3102122112121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212112212013 is a prime.

It is a super-2 number, since 2×1212112212013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212112212043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15172795 + ... + 15252472.

It is an arithmetic number, because the mean of its divisors is an integer number (303035669280).

Almost surely, 2^{1212112212013} is an apocalyptic number.

It is an amenable number.

1212112212013 is a deficient number, since it is larger than the sum of its proper divisors (30465107).

1212112212013 is an equidigital number, since it uses as much as digits as its factorization.

1212112212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30465106.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1212112212013 its reverse (3102122112121), we get a palindrome (4314234324134).

The spelling of 1212112212013 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred twelve thousand, thirteen".