12121210011 has 8 divisors (see below), whose sum is σ = 16718910480. Its totient is φ = 7802158112.

The previous prime is 12121210009. The next prime is 12121210039. The reversal of 12121210011 is 11001212121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12121210011 - 2¹ = 12121210009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121210811) 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, 69662040 + ... + 69662213.

It is an arithmetic number, because the mean of its divisors is an integer number (2089863810).

Almost surely, 2^12121210011 is an apocalyptic number.

12121210011 is a deficient number, since it is larger than the sum of its proper divisors (4597700469).

12121210011 is a wasteful number, since it uses less digits than its factorization.

12121210011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139324285.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12121210011 its reverse (11001212121), we get a palindrome (23122422132).

The spelling of 12121210011 in words is "twelve billion, one hundred twenty-one million, two hundred ten thousand, eleven".