11211120123 has 8 divisors (see below), whose sum is σ = 17083611648. Its totient is φ = 6406354344.

The previous prime is 11211120077. The next prime is 11211120131. The reversal of 11211120123 is 32102111211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11211120123 - 2¹² = 11211116027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11211120623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266931411 + ... + 266931452.

It is an arithmetic number, because the mean of its divisors is an integer number (2135451456).

Almost surely, 2^11211120123 is an apocalyptic number.

11211120123 is a deficient number, since it is larger than the sum of its proper divisors (5872491525).

11211120123 is an equidigital number, since it uses as much as digits as its factorization.

11211120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533862873.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11211120123 its reverse (32102111211), we get a palindrome (43313231334).

The spelling of 11211120123 in words is "eleven billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty-three".