123020113211 has 2 divisors, whose sum is σ = 123020113212. Its totient is φ = 123020113210.

The previous prime is 123020113171. The next prime is 123020113213. The reversal of 123020113211 is 112311020321.

It is a strong prime.

It is an emirp because it is prime and its reverse (112311020321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123020113211 - 2²⁶ = 122953004347 is a prime.

Together with 123020113213, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123020113211.

It is not a weakly prime, because it can be changed into another prime (123020113213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61510056605 + 61510056606.

It is an arithmetic number, because the mean of its divisors is an integer number (61510056606).

Almost surely, 2^123020113211 is an apocalyptic number.

123020113211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123020113211 is an equidigital number, since it uses as much as digits as its factorization.

123020113211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 123020113211 its reverse (112311020321), we get a palindrome (235331133532).

The spelling of 123020113211 in words is "one hundred twenty-three billion, twenty million, one hundred thirteen thousand, two hundred eleven".