1013400021125 has 16 divisors (see below), whose sum is σ = 1266993911664. Its totient is φ = 809264449600.

The previous prime is 1013400021079. The next prime is 1013400021173. The reversal of 1013400021125 is 5211200043101.

It can be written as a sum of positive squares in 8 ways, for example, as 817156337089 + 196243684036 = 903967^2 + 442994^2 .

It is not a de Polignac number, because 1013400021125 - 2⁶ = 1013400021061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013400021097 and 1013400021106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7207934 + ... + 7347183.

It is an arithmetic number, because the mean of its divisors is an integer number (79187119479).

Almost surely, 2^{1013400021125} is an apocalyptic number.

It is an amenable number.

1013400021125 is a deficient number, since it is larger than the sum of its proper divisors (253593890539).

1013400021125 is an equidigital number, since it uses as much as digits as its factorization.

1013400021125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14555689 (or 14555679 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1013400021125 its reverse (5211200043101), we get a palindrome (6224600064226).

The spelling of 1013400021125 in words is "one trillion, thirteen billion, four hundred million, twenty-one thousand, one hundred twenty-five".