12211121011123 has 2 divisors, whose sum is σ = 12211121011124. Its totient is φ = 12211121011122.

The previous prime is 12211121011003. The next prime is 12211121011207. The reversal of 12211121011123 is 32111012111221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211121011123 is a prime.

It is a super-2 number, since 2×12211121011123² (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 12211121011123.

It is not a weakly prime, because it can be changed into another prime (12211121711123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105560505561 + 6105560505562.

It is an arithmetic number, because the mean of its divisors is an integer number (6105560505562).

Almost surely, 2^{12211121011123} is an apocalyptic number.

12211121011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211121011123 is an equidigital number, since it uses as much as digits as its factorization.

12211121011123 is an evil number, because the sum of its binary digits is even.

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

Adding to 12211121011123 its reverse (32111012111221), we get a palindrome (44322133122344).

The spelling of 12211121011123 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, eleven thousand, one hundred twenty-three".