11101021123 has 2 divisors, whose sum is σ = 11101021124. Its totient is φ = 11101021122.

The previous prime is 11101021121. The next prime is 11101021153. The reversal of 11101021123 is 32112010111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11101021123 - 2¹ = 11101021121 is a prime.

It is a super-2 number, since 2×11101021123² (a number of 21 digits) contains 22 as substring.

Together with 11101021121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11101021121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550510561 + 5550510562.

It is an arithmetic number, because the mean of its divisors is an integer number (5550510562).

Almost surely, 2^11101021123 is an apocalyptic number.

11101021123 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101021123 is an equidigital number, since it uses as much as digits as its factorization.

11101021123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11101021123 its reverse (32112010111), we get a palindrome (43213031234).

The spelling of 11101021123 in words is "eleven billion, one hundred one million, twenty-one thousand, one hundred twenty-three".