1311400212020 has 12 divisors (see below), whose sum is σ = 2753940445284. Its totient is φ = 524560084800.

The previous prime is 1311400212019. The next prime is 1311400212049. The reversal of 1311400212020 is 202120041131.

It can be written as a sum of positive squares in 2 ways, for example, as 798245754916 + 513154457104 = 893446^2 + 716348^2 .

It is a super-2 number, since 2×1311400212020² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1311400212020.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 32785005281 + ... + 32785005320.

It is an arithmetic number, because the mean of its divisors is an integer number (229495037107).

Almost surely, 2^{1311400212020} is an apocalyptic number.

1311400212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311400212020 is an abundant number, since it is smaller than the sum of its proper divisors (1442540233264).

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

1311400212020 is a wasteful number, since it uses less digits than its factorization.

1311400212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65570010610 (or 65570010608 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1311400212020 its reverse (202120041131), we get a palindrome (1513520253151).

The spelling of 1311400212020 in words is "one trillion, three hundred eleven billion, four hundred million, two hundred twelve thousand, twenty".