123311120011 has 16 divisors (see below), whose sum is σ = 125143080480. Its totient is φ = 121493260800.

The previous prime is 123311120003. The next prime is 123311120021. The reversal of 123311120011 is 110021113321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123311120011 - 2³ = 123311120003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123311120021) 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, 24171361 + ... + 24176461.

It is an arithmetic number, because the mean of its divisors is an integer number (7821442530).

Almost surely, 2^123311120011 is an apocalyptic number.

123311120011 is a deficient number, since it is larger than the sum of its proper divisors (1831960469).

123311120011 is a wasteful number, since it uses less digits than its factorization.

123311120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6414.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 123311120011 its reverse (110021113321), we get a palindrome (233332233332).

The spelling of 123311120011 in words is "one hundred twenty-three billion, three hundred eleven million, one hundred twenty thousand, eleven".