123011212211 has 2 divisors, whose sum is σ = 123011212212. Its totient is φ = 123011212210.

The previous prime is 123011212199. The next prime is 123011212223. The reversal of 123011212211 is 112212110321.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (123011212199) and next prime (123011212223).

It is an emirp because it is prime and its reverse (112212110321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123011212211 - 2²² = 123007017907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123011212211.

It is not a weakly prime, because it can be changed into another prime (123011212241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505606105 + 61505606106.

It is an arithmetic number, because the mean of its divisors is an integer number (61505606106).

Almost surely, 2^123011212211 is an apocalyptic number.

123011212211 is a deficient number, since it is larger than the sum of its proper divisors (1).

123011212211 is an equidigital number, since it uses as much as digits as its factorization.

123011212211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 123011212211 its reverse (112212110321), we get a palindrome (235223322532).

The spelling of 123011212211 in words is "one hundred twenty-three billion, eleven million, two hundred twelve thousand, two hundred eleven".