121001000200111 has 2 divisors, whose sum is σ = 121001000200112. Its totient is φ = 121001000200110.

The previous prime is 121001000200097. The next prime is 121001000200133. The reversal of 121001000200111 is 111002000100121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121001000200111 - 2⁷ = 121001000199983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121001000200211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500500100055 + 60500500100056.

It is an arithmetic number, because the mean of its divisors is an integer number (60500500100056).

Almost surely, 2^{121001000200111} is an apocalyptic number.

121001000200111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001000200111 is an equidigital number, since it uses as much as digits as its factorization.

121001000200111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121001000200111 its reverse (111002000100121), we get a palindrome (232003000300232).

The spelling of 121001000200111 in words is "one hundred twenty-one trillion, one billion, two hundred thousand, one hundred eleven".