12121001102011 has 4 divisors (see below), whose sum is σ = 12121076303632. Its totient is φ = 12120925900392.

The previous prime is 12121001102009. The next prime is 12121001102069. The reversal of 12121001102011 is 11020110012121.

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 12121001102011 - 2¹ = 12121001102009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12121001101982 and 12121001102000.

It is not an unprimeable number, because it can be changed into a prime (12121001102071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37358520 + ... + 37681573.

It is an arithmetic number, because the mean of its divisors is an integer number (3030269075908).

Almost surely, 2^{12121001102011} is an apocalyptic number.

12121001102011 is a deficient number, since it is larger than the sum of its proper divisors (75201621).

12121001102011 is an equidigital number, since it uses as much as digits as its factorization.

12121001102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75201620.

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

Adding to 12121001102011 its reverse (11020110012121), we get a palindrome (23141111114132).

The spelling of 12121001102011 in words is "twelve trillion, one hundred twenty-one billion, one million, one hundred two thousand, eleven".