11011211100123 has 48 divisors (see below), whose sum is σ = 17161090686720. Its totient is φ = 6258014835072.

The previous prime is 11011211100107. The next prime is 11011211100157. The reversal of 11011211100123 is 32100111211011.

It is not a de Polignac number, because 11011211100123 - 2⁴ = 11011211100107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11011211100163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15942465 + ... + 16618802.

It is an arithmetic number, because the mean of its divisors is an integer number (357522722640).

Almost surely, 2^{11011211100123} is an apocalyptic number.

11011211100123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11011211100123 is a deficient number, since it is larger than the sum of its proper divisors (6149879586597).

11011211100123 is a wasteful number, since it uses less digits than its factorization.

11011211100123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32561348 (or 32561335 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 11011211100123 its reverse (32100111211011), we get a palindrome (43111322311134).

The spelling of 11011211100123 in words is "eleven trillion, eleven billion, two hundred eleven million, one hundred thousand, one hundred twenty-three".