1212012110011 has 4 divisors (see below), whose sum is σ = 1212023789992. Its totient is φ = 1212000430032.

The previous prime is 1212012109993. The next prime is 1212012110027. The reversal of 1212012110011 is 1100112102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212012110011 - 2⁷ = 1212012109883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1212012109973 and 1212012110000.

It is not an unprimeable number, because it can be changed into a prime (1212012110411) 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, 5682930 + ... + 5892343.

It is an arithmetic number, because the mean of its divisors is an integer number (303005947498).

Almost surely, 2^{1212012110011} is an apocalyptic number.

1212012110011 is a deficient number, since it is larger than the sum of its proper divisors (11679981).

1212012110011 is a wasteful number, since it uses less digits than its factorization.

1212012110011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11679980.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1212012110011 its reverse (1100112102121), we get a palindrome (2312124212132).

The spelling of 1212012110011 in words is "one trillion, two hundred twelve billion, twelve million, one hundred ten thousand, eleven".