1020111311286 has 40 divisors (see below), whose sum is σ = 2287271741040. Its totient is φ = 339818907312.

The previous prime is 1020111311231. The next prime is 1020111311287. The reversal of 1020111311286 is 6821131110201.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020111311287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1767001 + ... + 2272116.

It is an arithmetic number, because the mean of its divisors is an integer number (57181793526).

Almost surely, 2^{1020111311286} is an apocalyptic number.

1020111311286 is an abundant number, since it is smaller than the sum of its proper divisors (1267160429754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020111311286 is a wasteful number, since it uses less digits than its factorization.

1020111311286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040690 (or 4040681 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

Adding to 1020111311286 its reverse (6821131110201), we get a palindrome (7841242421487).

The spelling of 1020111311286 in words is "one trillion, twenty billion, one hundred eleven million, three hundred eleven thousand, two hundred eighty-six".