4121231111111 has 2 divisors, whose sum is σ = 4121231111112. Its totient is φ = 4121231111110.

The previous prime is 4121231111071. The next prime is 4121231111159. The reversal of 4121231111111 is 1111111321214.

It is a m-pointer prime, because the next prime (4121231111159) can be obtained adding 4121231111111 to its product of digits (48).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4121231111111 - 2¹⁸ = 4121230848967 is a prime.

4121231111111 is a modest number, since divided by 1111111 gives 412123 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121231111161) 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, 2060615555555 + 2060615555556.

It is an arithmetic number, because the mean of its divisors is an integer number (2060615555556).

Almost surely, 2^{4121231111111} is an apocalyptic number.

4121231111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121231111111 is an equidigital number, since it uses as much as digits as its factorization.

4121231111111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 20.

Adding to 4121231111111 its reverse (1111111321214), we get a palindrome (5232342432325).

The spelling of 4121231111111 in words is "four trillion, one hundred twenty-one billion, two hundred thirty-one million, one hundred eleven thousand, one hundred eleven".