1211102231123 has 2 divisors, whose sum is σ = 1211102231124. Its totient is φ = 1211102231122.

The previous prime is 1211102231029. The next prime is 1211102231177. The reversal of 1211102231123 is 3211322011121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1211102231123 - 2³⁸ = 936224324179 is a prime.

It is a super-2 number, since 2×1211102231123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1211102231095 and 1211102231104.

It is not a weakly prime, because it can be changed into another prime (1211102231323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605551115561 + 605551115562.

It is an arithmetic number, because the mean of its divisors is an integer number (605551115562).

Almost surely, 2^{1211102231123} is an apocalyptic number.

1211102231123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211102231123 is an equidigital number, since it uses as much as digits as its factorization.

1211102231123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1211102231123 its reverse (3211322011121), we get a palindrome (4422424242244).

The spelling of 1211102231123 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred thirty-one thousand, one hundred twenty-three".