11101221112123 has 2 divisors, whose sum is σ = 11101221112124. Its totient is φ = 11101221112122.

The previous prime is 11101221112117. The next prime is 11101221112129. The reversal of 11101221112123 is 32121112210111.

It is a balanced prime because it is at equal distance from previous prime (11101221112117) and next prime (11101221112129).

It is a cyclic number.

It is not a de Polignac number, because 11101221112123 - 2⁴¹ = 8902197856571 is a prime.

It is a super-2 number, since 2×11101221112123² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11101221112123.

It is not a weakly prime, because it can be changed into another prime (11101221112129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550610556061 + 5550610556062.

It is an arithmetic number, because the mean of its divisors is an integer number (5550610556062).

Almost surely, 2^{11101221112123} is an apocalyptic number.

11101221112123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101221112123 is an equidigital number, since it uses as much as digits as its factorization.

11101221112123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11101221112123 its reverse (32121112210111), we get a palindrome (43222333322234).

The spelling of 11101221112123 in words is "eleven trillion, one hundred one billion, two hundred twenty-one million, one hundred twelve thousand, one hundred twenty-three".