1020111311287 has 2 divisors, whose sum is σ = 1020111311288. Its totient is φ = 1020111311286.

The previous prime is 1020111311231. The next prime is 1020111311321. The reversal of 1020111311287 is 7821131110201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1020111311287 - 2³⁵ = 985751572919 is a prime.

It is a super-2 number, since 2×1020111311287² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020111311587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510055655643 + 510055655644.

It is an arithmetic number, because the mean of its divisors is an integer number (510055655644).

Almost surely, 2^{1020111311287} is an apocalyptic number.

1020111311287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020111311287 is an equidigital number, since it uses as much as digits as its factorization.

1020111311287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 28.

Adding to 1020111311287 its reverse (7821131110201), we get a palindrome (8841242421488).

The spelling of 1020111311287 in words is "one trillion, twenty billion, one hundred eleven million, three hundred eleven thousand, two hundred eighty-seven".