1072247800321 has 4 divisors (see below), whose sum is σ = 1073869961044. Its totient is φ = 1070625639600.

The previous prime is 1072247800319. The next prime is 1072247800343. The reversal of 1072247800321 is 1230087422701.

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 614005452225 + 458242348096 = 783585^2 + 676936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072247800321 - 2¹ = 1072247800319 is a prime.

It is a super-2 number, since 2×1072247800321² (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 (1072247800301) 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, 811079370 + ... + 811080691.

It is an arithmetic number, because the mean of its divisors is an integer number (268467490261).

Almost surely, 2^{1072247800321} is an apocalyptic number.

It is an amenable number.

1072247800321 is a deficient number, since it is larger than the sum of its proper divisors (1622160723).

1072247800321 is an equidigital number, since it uses as much as digits as its factorization.

1072247800321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622160722.

The product of its (nonzero) digits is 37632, while the sum is 37.

The spelling of 1072247800321 in words is "one trillion, seventy-two billion, two hundred forty-seven million, eight hundred thousand, three hundred twenty-one".