12121010212211 has 32 divisors (see below), whose sum is σ = 12487470686208. Its totient is φ = 11761836387840.

The previous prime is 12121010212193. The next prime is 12121010212217. The reversal of 12121010212211 is 11221201012121.

It is a cyclic number.

It is not a de Polignac number, because 12121010212211 - 2³⁴ = 12103830343027 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121010212211.

It is not an unprimeable number, because it can be changed into a prime (12121010212217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2437361321 + ... + 2437366293.

It is an arithmetic number, because the mean of its divisors is an integer number (390233458944).

Almost surely, 2^{12121010212211} is an apocalyptic number.

12121010212211 is a deficient number, since it is larger than the sum of its proper divisors (366460473997).

12121010212211 is a wasteful number, since it uses less digits than its factorization.

12121010212211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451.

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

Adding to 12121010212211 its reverse (11221201012121), we get a palindrome (23342211224332).

The spelling of 12121010212211 in words is "twelve trillion, one hundred twenty-one billion, ten million, two hundred twelve thousand, two hundred eleven".