123010120111 has 4 divisors (see below), whose sum is σ = 123026820400. Its totient is φ = 122993419824.

The previous prime is 123010120097. The next prime is 123010120201. The reversal of 123010120111 is 111021010321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123010120111 - 2³¹ = 120862636463 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123010120091 and 123010120100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123010420111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8339091 + ... + 8353828.

It is an arithmetic number, because the mean of its divisors is an integer number (30756705100).

Almost surely, 2^123010120111 is an apocalyptic number.

123010120111 is a deficient number, since it is larger than the sum of its proper divisors (16700289).

123010120111 is an equidigital number, since it uses as much as digits as its factorization.

123010120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16700288.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 123010120111 its reverse (111021010321), we get a palindrome (234031130432).

The spelling of 123010120111 in words is "one hundred twenty-three billion, ten million, one hundred twenty thousand, one hundred eleven".