123012001101 has 16 divisors (see below), whose sum is σ = 178932579840. Its totient is φ = 74550214320.

The previous prime is 123012001097. The next prime is 123012001127. The reversal of 123012001101 is 101100210321.

It is not a de Polignac number, because 123012001101 - 2² = 123012001097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012001141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1543920 + ... + 1621638.

It is an arithmetic number, because the mean of its divisors is an integer number (11183286240).

Almost surely, 2^123012001101 is an apocalyptic number.

123012001101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123012001101 is a deficient number, since it is larger than the sum of its proper divisors (55920578739).

123012001101 is a wasteful number, since it uses less digits than its factorization.

123012001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125696.

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

Adding to 123012001101 its reverse (101100210321), we get a palindrome (224112211422).

The spelling of 123012001101 in words is "one hundred twenty-three billion, twelve million, one thousand, one hundred one".