121212201120011 has 4 divisors (see below), whose sum is σ = 121459069147224. Its totient is φ = 120965333092800.

The previous prime is 121212201120007. The next prime is 121212201120019. The reversal of 121212201120011 is 110021102212121.

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 121212201120011 - 2² = 121212201120007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121212201120019) 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, 123434012870 + ... + 123434013851.

It is an arithmetic number, because the mean of its divisors is an integer number (30364767286806).

Almost surely, 2^{121212201120011} is an apocalyptic number.

121212201120011 is a deficient number, since it is larger than the sum of its proper divisors (246868027213).

121212201120011 is an equidigital number, since it uses as much as digits as its factorization.

121212201120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246868027212.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121212201120011 its reverse (110021102212121), we get a palindrome (231233303332132).

The spelling of 121212201120011 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred one million, one hundred twenty thousand, eleven".