212120110112111 has 2 divisors, whose sum is σ = 212120110112112. Its totient is φ = 212120110112110.

The previous prime is 212120110112107. The next prime is 212120110112137. The reversal of 212120110112111 is 111211011021212.

212120110112111 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 212120110112111 - 2² = 212120110112107 is a prime.

It is a super-2 number, since 2×212120110112111² (a number of 29 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 212120110112111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212120110112101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060055056055 + 106060055056056.

It is an arithmetic number, because the mean of its divisors is an integer number (106060055056056).

Almost surely, 2^{212120110112111} is an apocalyptic number.

212120110112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120110112111 is an equidigital number, since it uses as much as digits as its factorization.

212120110112111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 212120110112111 its reverse (111211011021212), we get a palindrome (323331121133323).

The spelling of 212120110112111 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred ten million, one hundred twelve thousand, one hundred eleven".