1212112112011 has 8 divisors (see below), whose sum is σ = 1229004257360. Its totient is φ = 1195227747072.

The previous prime is 1212112111999. The next prime is 1212112112033. The reversal of 1212112112011 is 1102112112121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212112112011 - 2⁷ = 1212112111883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212112112311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1631001 + ... + 2254858.

It is an arithmetic number, because the mean of its divisors is an integer number (153625532170).

Almost surely, 2^{1212112112011} is an apocalyptic number.

1212112112011 is a deficient number, since it is larger than the sum of its proper divisors (16892145349).

1212112112011 is an equidigital number, since it uses as much as digits as its factorization.

1212112112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890205.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1212112112011 its reverse (1102112112121), we get a palindrome (2314224224132).

The spelling of 1212112112011 in words is "one trillion, two hundred twelve billion, one hundred twelve million, one hundred twelve thousand, eleven".