1123211011123 has 2 divisors, whose sum is σ = 1123211011124. Its totient is φ = 1123211011122.

The previous prime is 1123211011121. The next prime is 1123211011127. The reversal of 1123211011123 is 3211101123211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123211011123 - 2¹ = 1123211011121 is a prime.

It is a super-2 number, since 2×1123211011123² (a number of 25 digits) contains 22 as substring.

Together with 1123211011121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1123211011123.

It is not a weakly prime, because it can be changed into another prime (1123211011121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561605505561 + 561605505562.

It is an arithmetic number, because the mean of its divisors is an integer number (561605505562).

Almost surely, 2^{1123211011123} is an apocalyptic number.

1123211011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123211011123 is an equidigital number, since it uses as much as digits as its factorization.

1123211011123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1123211011123 its reverse (3211101123211), we get a palindrome (4334312134334).

The spelling of 1123211011123 in words is "one trillion, one hundred twenty-three billion, two hundred eleven million, eleven thousand, one hundred twenty-three".