1211401430287 has 2 divisors, whose sum is σ = 1211401430288. Its totient is φ = 1211401430286.

The previous prime is 1211401430263. The next prime is 1211401430311. The reversal of 1211401430287 is 7820341041121.

It is a balanced prime because it is at equal distance from previous prime (1211401430263) and next prime (1211401430311).

It is a cyclic number.

It is not a de Polignac number, because 1211401430287 - 2³⁵ = 1177041691919 is a prime.

It is a super-3 number, since 3×1211401430287³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211401430087) 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, 605700715143 + 605700715144.

It is an arithmetic number, because the mean of its divisors is an integer number (605700715144).

Almost surely, 2^{1211401430287} is an apocalyptic number.

1211401430287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211401430287 is an equidigital number, since it uses as much as digits as its factorization.

1211401430287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 1211401430287 in words is "one trillion, two hundred eleven billion, four hundred one million, four hundred thirty thousand, two hundred eighty-seven".