121211010212287 has 2 divisors, whose sum is σ = 121211010212288. Its totient is φ = 121211010212286.

The previous prime is 121211010212219. The next prime is 121211010212323. The reversal of 121211010212287 is 782212010112121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (782212010112121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121211010212287 - 2²³ = 121211001823679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211010212987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605505106143 + 60605505106144.

It is an arithmetic number, because the mean of its divisors is an integer number (60605505106144).

Almost surely, 2^{121211010212287} is an apocalyptic number.

121211010212287 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211010212287 is an equidigital number, since it uses as much as digits as its factorization.

121211010212287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 31.

The spelling of 121211010212287 in words is "one hundred twenty-one trillion, two hundred eleven billion, ten million, two hundred twelve thousand, two hundred eighty-seven".