12120020122211 has 4 divisors (see below), whose sum is σ = 12286047795192. Its totient is φ = 11953992449232.

The previous prime is 12120020122187. The next prime is 12120020122213. The reversal of 12120020122211 is 11222102002121.

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 12120020122211 - 2³⁴ = 12102840253027 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 12120020122211.

It is not an unprimeable number, because it can be changed into a prime (12120020122213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83013836381 + ... + 83013836526.

It is an arithmetic number, because the mean of its divisors is an integer number (3071511948798).

Almost surely, 2^{12120020122211} is an apocalyptic number.

12120020122211 is a deficient number, since it is larger than the sum of its proper divisors (166027672981).

12120020122211 is an equidigital number, since it uses as much as digits as its factorization.

12120020122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166027672980.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12120020122211 its reverse (11222102002121), we get a palindrome (23342122124332).

The spelling of 12120020122211 in words is "twelve trillion, one hundred twenty billion, twenty million, one hundred twenty-two thousand, two hundred eleven".