121112121211087 has 2 divisors, whose sum is σ = 121112121211088. Its totient is φ = 121112121211086.

The previous prime is 121112121211079. The next prime is 121112121211129. The reversal of 121112121211087 is 780112121211121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121112121211087 - 2³ = 121112121211079 is a prime.

It is a super-2 number, since 2×121112121211087² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121112121211007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556060605543 + 60556060605544.

It is an arithmetic number, because the mean of its divisors is an integer number (60556060605544).

Almost surely, 2^{121112121211087} is an apocalyptic number.

121112121211087 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112121211087 is an equidigital number, since it uses as much as digits as its factorization.

121112121211087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 31.

The spelling of 121112121211087 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-one million, two hundred eleven thousand, eighty-seven".