12213121010011 has 16 divisors (see below), whose sum is σ = 12256765915680. Its totient is φ = 12169568436480.

The previous prime is 12213121009961. The next prime is 12213121010029. The reversal of 12213121010011 is 11001012131221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12213121010011 - 2⁷ = 12213121009883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12213121011011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1294169385 + ... + 1294178821.

It is an arithmetic number, because the mean of its divisors is an integer number (766047869730).

Almost surely, 2^{12213121010011} is an apocalyptic number.

12213121010011 is a deficient number, since it is larger than the sum of its proper divisors (43644905669).

12213121010011 is an equidigital number, since it uses as much as digits as its factorization.

12213121010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13854.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12213121010011 its reverse (11001012131221), we get a palindrome (23214133141232).

It can be divided in two parts, 122131210 and 10011, that added together give a palindrome (122141221).

The spelling of 12213121010011 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-one million, ten thousand, eleven".