123013211101 has 4 divisors (see below), whose sum is σ = 134196230304. Its totient is φ = 111830191900.

The previous prime is 123013211059. The next prime is 123013211119. The reversal of 123013211101 is 101112310321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123013211101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013211161) 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, 5591509585 + ... + 5591509606.

It is an arithmetic number, because the mean of its divisors is an integer number (33549057576).

Almost surely, 2^123013211101 is an apocalyptic number.

123013211101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123013211101 is a deficient number, since it is larger than the sum of its proper divisors (11183019203).

123013211101 is a wasteful number, since it uses less digits than its factorization.

123013211101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11183019202.

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

Adding to 123013211101 its reverse (101112310321), we get a palindrome (224125521422).

The spelling of 123013211101 in words is "one hundred twenty-three billion, thirteen million, two hundred eleven thousand, one hundred one".