2111231122111 has 2 divisors, whose sum is σ = 2111231122112. Its totient is φ = 2111231122110.

The previous prime is 2111231122103. The next prime is 2111231122159. The reversal of 2111231122111 is 1112211321112.

It is a m-pointer prime, because the next prime (2111231122159) can be obtained adding 2111231122111 to its product of digits (48).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111231122111 - 2³ = 2111231122103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111231122411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055615561055 + 1055615561056.

It is an arithmetic number, because the mean of its divisors is an integer number (1055615561056).

Almost surely, 2^{2111231122111} is an apocalyptic number.

2111231122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111231122111 is an equidigital number, since it uses as much as digits as its factorization.

2111231122111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2111231122111 its reverse (1112211321112), we get a palindrome (3223442443223).

The spelling of 2111231122111 in words is "two trillion, one hundred eleven billion, two hundred thirty-one million, one hundred twenty-two thousand, one hundred eleven".