1011020321311 has 16 divisors (see below), whose sum is σ = 1357453859328. Its totient is φ = 727207423200.

The previous prime is 1011020321309. The next prime is 1011020321347. The reversal of 1011020321311 is 1131230201101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1011020321311 - 2¹ = 1011020321309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011020321111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 505004155 + ... + 505006156.

It is an arithmetic number, because the mean of its divisors is an integer number (84840866208).

Almost surely, 2^{1011020321311} is an apocalyptic number.

1011020321311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1011020321311 is a deficient number, since it is larger than the sum of its proper divisors (346433538017).

1011020321311 is a wasteful number, since it uses less digits than its factorization.

1011020321311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010010342.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1011020321311 its reverse (1131230201101), we get a palindrome (2142250522412).

It can be divided in two parts, 1011020 and 321311, that added together give a palindrome (1332331).

The spelling of 1011020321311 in words is "one trillion, eleven billion, twenty million, three hundred twenty-one thousand, three hundred eleven".