101121212011111 has 2 divisors, whose sum is σ = 101121212011112. Its totient is φ = 101121212011110.

The previous prime is 101121212011051. The next prime is 101121212011151. The reversal of 101121212011111 is 111110212121101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101121212011111 - 2²³ = 101121203622503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101121212011151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50560606005555 + 50560606005556.

It is an arithmetic number, because the mean of its divisors is an integer number (50560606005556).

Almost surely, 2^{101121212011111} is an apocalyptic number.

101121212011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

101121212011111 is an equidigital number, since it uses as much as digits as its factorization.

101121212011111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 101121212011111 its reverse (111110212121101), we get a palindrome (212231424132212).

The spelling of 101121212011111 in words is "one hundred one trillion, one hundred twenty-one billion, two hundred twelve million, eleven thousand, one hundred eleven".