1012134043421 has 16 divisors (see below), whose sum is σ = 1051398457200. Its totient is φ = 973660600320.

The previous prime is 1012134043399. The next prime is 1012134043457. The reversal of 1012134043421 is 1243404312101.

It can be written as a sum of positive squares in 8 ways, for example, as 255383676025 + 756750367396 = 505355^2 + 869914^2 .

It is not a de Polignac number, because 1012134043421 - 2³⁰ = 1011060301597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012134043721) 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, 232265 + ... + 1441601.

It is an arithmetic number, because the mean of its divisors is an integer number (65712403575).

Almost surely, 2^{1012134043421} is an apocalyptic number.

It is an amenable number.

1012134043421 is a deficient number, since it is larger than the sum of its proper divisors (39264413779).

1012134043421 is a wasteful number, since it uses less digits than its factorization.

1012134043421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209664.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1012134043421 its reverse (1243404312101), we get a palindrome (2255538355522).

The spelling of 1012134043421 in words is "one trillion, twelve billion, one hundred thirty-four million, forty-three thousand, four hundred twenty-one".