123011122113 has 48 divisors (see below), whose sum is σ = 195669100224. Its totient is φ = 73847854080.

The previous prime is 123011122109. The next prime is 123011122133. The reversal of 123011122113 is 311221110321.

It is not a de Polignac number, because 123011122113 - 2² = 123011122109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123011122133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35830245 + ... + 35833677.

It is an arithmetic number, because the mean of its divisors is an integer number (4076439588).

Almost surely, 2^123011122113 is an apocalyptic number.

It is an amenable number.

123011122113 is a deficient number, since it is larger than the sum of its proper divisors (72657978111).

123011122113 is a wasteful number, since it uses less digits than its factorization.

123011122113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6766 (or 6763 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 123011122113 its reverse (311221110321), we get a palindrome (434232232434).

The spelling of 123011122113 in words is "one hundred twenty-three billion, eleven million, one hundred twenty-two thousand, one hundred thirteen".