123011222011 has 2 divisors, whose sum is σ = 123011222012. Its totient is φ = 123011222010.

The previous prime is 123011222003. The next prime is 123011222041. The reversal of 123011222011 is 110222110321.

It is a weak prime.

It is an emirp because it is prime and its reverse (110222110321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123011222011 - 2³ = 123011222003 is a prime.

It is not a weakly prime, because it can be changed into another prime (123011222041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505611005 + 61505611006.

It is an arithmetic number, because the mean of its divisors is an integer number (61505611006).

Almost surely, 2^123011222011 is an apocalyptic number.

123011222011 is a deficient number, since it is larger than the sum of its proper divisors (1).

123011222011 is an equidigital number, since it uses as much as digits as its factorization.

123011222011 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 16.

Adding to 123011222011 its reverse (110222110321), we get a palindrome (233233332332).

The spelling of 123011222011 in words is "one hundred twenty-three billion, eleven million, two hundred twenty-two thousand, eleven".