123101221113 has 24 divisors (see below), whose sum is σ = 191503795392. Its totient is φ = 75749452128.

The previous prime is 123101221079. The next prime is 123101221121. The reversal of 123101221113 is 311122101321.

It is not a de Polignac number, because 123101221113 - 2⁸ = 123101220857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123101221013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2401570 + ... + 2452292.

It is an arithmetic number, because the mean of its divisors is an integer number (7979324808).

Almost surely, 2^123101221113 is an apocalyptic number.

123101221113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

123101221113 is a deficient number, since it is larger than the sum of its proper divisors (68402574279).

123101221113 is a wasteful number, since it uses less digits than its factorization.

123101221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71485 (or 71482 counting only the distinct ones).

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

Adding to 123101221113 its reverse (311122101321), we get a palindrome (434223322434).

The spelling of 123101221113 in words is "one hundred twenty-three billion, one hundred one million, two hundred twenty-one thousand, one hundred thirteen".