121000022101111 has 2 divisors, whose sum is σ = 121000022101112. Its totient is φ = 121000022101110.

The previous prime is 121000022101073. The next prime is 121000022101117. The reversal of 121000022101111 is 111101220000121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121000022101111 - 2⁷ = 121000022100983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121000022101091 and 121000022101100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121000022101117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500011050555 + 60500011050556.

It is an arithmetic number, because the mean of its divisors is an integer number (60500011050556).

Almost surely, 2^{121000022101111} is an apocalyptic number.

121000022101111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000022101111 is an equidigital number, since it uses as much as digits as its factorization.

121000022101111 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 121000022101111 its reverse (111101220000121), we get a palindrome (232101242101232).

The spelling of 121000022101111 in words is "one hundred twenty-one trillion, twenty-two million, one hundred one thousand, one hundred eleven".