121111201111012 has 12 divisors (see below), whose sum is σ = 242222402222080. Its totient is φ = 51904800476136.

The previous prime is 121111201110961. The next prime is 121111201111031. The reversal of 121111201111012 is 210111102111121.

121111201111012 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2162700019812 + ... + 2162700019867.

Almost surely, 2^{121111201111012} is an apocalyptic number.

It is an amenable number.

121111201111012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121111201111012 is a wasteful number, since it uses less digits than its factorization.

121111201111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325400039690 (or 4325400039688 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 121111201111012 its reverse (210111102111121), we get a palindrome (331222303222133).

The spelling of 121111201111012 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred one million, one hundred eleven thousand, twelve".