11201210123 has 4 divisors (see below), whose sum is σ = 11201454648. Its totient is φ = 11200965600.

The previous prime is 11201210117. The next prime is 11201210131. The reversal of 11201210123 is 32101210211.

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 11201210123 - 2⁸ = 11201209867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201210098 and 11201210107.

It is not an unprimeable number, because it can be changed into a prime (11201210113) 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, 30686 + ... + 152787.

It is an arithmetic number, because the mean of its divisors is an integer number (2800363662).

Almost surely, 2^11201210123 is an apocalyptic number.

11201210123 is a deficient number, since it is larger than the sum of its proper divisors (244525).

11201210123 is an equidigital number, since it uses as much as digits as its factorization.

11201210123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244524.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 11201210123 its reverse (32101210211), we get a palindrome (43302420334).

The spelling of 11201210123 in words is "eleven billion, two hundred one million, two hundred ten thousand, one hundred twenty-three".