1056274723321 has 4 divisors (see below), whose sum is σ = 1056485603700. Its totient is φ = 1056063842944.

The previous prime is 1056274723297. The next prime is 1056274723327. The reversal of 1056274723321 is 1233274726501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 763308005625 + 292966717696 = 873675^2 + 541264^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056274723321 - 2⁹ = 1056274722809 is a prime.

It is a super-2 number, since 2×1056274723321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056274723327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105432676 + ... + 105442693.

It is an arithmetic number, because the mean of its divisors is an integer number (264121400925).

Almost surely, 2^{1056274723321} is an apocalyptic number.

It is an amenable number.

1056274723321 is a deficient number, since it is larger than the sum of its proper divisors (210880379).

1056274723321 is an equidigital number, since it uses as much as digits as its factorization.

1056274723321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210880378.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 1056274723321 in words is "one trillion, fifty-six billion, two hundred seventy-four million, seven hundred twenty-three thousand, three hundred twenty-one".