12054512111 has 2 divisors, whose sum is σ = 12054512112. Its totient is φ = 12054512110.

The previous prime is 12054512101. The next prime is 12054512123. The reversal of 12054512111 is 11121545021.

It is a happy number.

12054512111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12054512111 - 2⁶ = 12054512047 is a prime.

It is a super-2 number, since 2×12054512111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12054512101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6027256055 + 6027256056.

It is an arithmetic number, because the mean of its divisors is an integer number (6027256056).

Almost surely, 2^12054512111 is an apocalyptic number.

12054512111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12054512111 is an equidigital number, since it uses as much as digits as its factorization.

12054512111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 400, while the sum is 23.

The spelling of 12054512111 in words is "twelve billion, fifty-four million, five hundred twelve thousand, one hundred eleven".