11211111011123 has 8 divisors (see below), whose sum is σ = 11411522915760. Its totient is φ = 11011045542400.

The previous prime is 11211111011081. The next prime is 11211111011129. The reversal of 11211111011123 is 32111011111211.

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

It is a cyclic number.

It is not a de Polignac number, because 11211111011123 - 2³² = 11206816043827 is a prime.

It is a super-2 number, since 2×11211111011123² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11211111011129) 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, 86543678 + ... + 86673123.

It is an arithmetic number, because the mean of its divisors is an integer number (1426440364470).

Almost surely, 2^{11211111011123} is an apocalyptic number.

11211111011123 is a deficient number, since it is larger than the sum of its proper divisors (200411904637).

11211111011123 is a wasteful number, since it uses less digits than its factorization.

11211111011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173217957.

The product of its (nonzero) digits is 12, while the sum is 17.

Adding to 11211111011123 its reverse (32111011111211), we get a palindrome (43322122122334).

The spelling of 11211111011123 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, eleven thousand, one hundred twenty-three".