20123004013211 has 6 divisors (see below), whose sum is σ = 22118673832836. Its totient is φ = 18293640011900.

The previous prime is 20123004013199. The next prime is 20123004013283. The reversal of 20123004013211 is 11231040032102.

It is a de Polignac number, because none of the positive numbers 2^k-20123004013211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123004019211) 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 5 ways as a sum of consecutive naturals, for example, 83152909025 + ... + 83152909266.

It is an arithmetic number, because the mean of its divisors is an integer number (3686445638806).

Almost surely, 2^{20123004013211} is an apocalyptic number.

20123004013211 is a deficient number, since it is larger than the sum of its proper divisors (1995669819625).

20123004013211 is a wasteful number, since it uses less digits than its factorization.

20123004013211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166305818313 (or 166305818302 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20123004013211 its reverse (11231040032102), we get a palindrome (31354044045313).

The spelling of 20123004013211 in words is "twenty trillion, one hundred twenty-three billion, four million, thirteen thousand, two hundred eleven".