12121020021211 has 8 divisors (see below), whose sum is σ = 12759156218880. Its totient is φ = 11482902601128.

The previous prime is 12121020021139. The next prime is 12121020021281. The reversal of 12121020021211 is 11212002012121.

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 12121020021211 - 2⁷ = 12121020021083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121020021281) 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 7 ways as a sum of consecutive naturals, for example, 3359671 + ... + 5960656.

It is an arithmetic number, because the mean of its divisors is an integer number (1594894527360).

Almost surely, 2^{12121020021211} is an apocalyptic number.

12121020021211 is a deficient number, since it is larger than the sum of its proper divisors (638136197669).

12121020021211 is an equidigital number, since it uses as much as digits as its factorization.

12121020021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9388793.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12121020021211 its reverse (11212002012121), we get a palindrome (23333022033332).

The spelling of 12121020021211 in words is "twelve trillion, one hundred twenty-one billion, twenty million, twenty-one thousand, two hundred eleven".