262121121287 has 2 divisors, whose sum is σ = 262121121288. Its totient is φ = 262121121286.

The previous prime is 262121121257. The next prime is 262121121307. The reversal of 262121121287 is 782121121262.

262121121287 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 262121121287 - 2¹⁰ = 262121120263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (262121121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131060560643 + 131060560644.

It is an arithmetic number, because the mean of its divisors is an integer number (131060560644).

Almost surely, 2^262121121287 is an apocalyptic number.

262121121287 is a deficient number, since it is larger than the sum of its proper divisors (1).

262121121287 is an equidigital number, since it uses as much as digits as its factorization.

262121121287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 35.

The spelling of 262121121287 in words is "two hundred sixty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred eighty-seven".