122012011111 has 2 divisors, whose sum is σ = 122012011112. Its totient is φ = 122012011110.

The previous prime is 122012011087. The next prime is 122012011117. The reversal of 122012011111 is 111110210221.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (111110210221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122012011111 - 2⁹ = 122012010599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122012011091 and 122012011100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122012011117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61006005555 + 61006005556.

It is an arithmetic number, because the mean of its divisors is an integer number (61006005556).

Almost surely, 2^122012011111 is an apocalyptic number.

122012011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

122012011111 is an equidigital number, since it uses as much as digits as its factorization.

122012011111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122012011111 its reverse (111110210221), we get a palindrome (233122221332).

The spelling of 122012011111 in words is "one hundred twenty-two billion, twelve million, eleven thousand, one hundred eleven".