12011121010012 has 24 divisors (see below), whose sum is σ = 22021352353280. Its totient is φ = 5725088970480.

The previous prime is 12011121009989. The next prime is 12011121010013. The reversal of 12011121010012 is 21001012111021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12011121009974 and 12011121010001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011121010013) 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, 722856462 + ... + 722873077.

Almost surely, 2^{12011121010012} is an apocalyptic number.

It is an amenable number.

12011121010012 is a deficient number, since it is larger than the sum of its proper divisors (10010231343268).

12011121010012 is a wasteful number, since it uses less digits than its factorization.

12011121010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445729641 (or 1445729639 counting only the distinct ones).

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

Adding to 12011121010012 its reverse (21001012111021), we get a palindrome (33012133121033).

The spelling of 12011121010012 in words is "twelve trillion, eleven billion, one hundred twenty-one million, ten thousand, twelve".