211313122123 has 16 divisors (see below), whose sum is σ = 215431506144. Its totient is φ = 207216840960.

The previous prime is 211313122117. The next prime is 211313122129. The reversal of 211313122123 is 321221313112.

It is an interprime number because it is at equal distance from previous prime (211313122117) and next prime (211313122129).

It is a cyclic number.

It is not a de Polignac number, because 211313122123 - 2⁵ = 211313122091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211313122094 and 211313122103.

It is not an unprimeable number, because it can be changed into a prime (211313122129) 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, 30813711 + ... + 30820567.

It is an arithmetic number, because the mean of its divisors is an integer number (13464469134).

Almost surely, 2^211313122123 is an apocalyptic number.

211313122123 is a deficient number, since it is larger than the sum of its proper divisors (4118384021).

211313122123 is an equidigital number, since it uses as much as digits as its factorization.

211313122123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8382.

The product of its digits is 432, while the sum is 22.

Adding to 211313122123 its reverse (321221313112), we get a palindrome (532534435235).

The spelling of 211313122123 in words is "two hundred eleven billion, three hundred thirteen million, one hundred twenty-two thousand, one hundred twenty-three".