1012444321 has 6 divisors (see below), whose sum is σ = 1177741410. Its totient is φ = 867809376.

The previous prime is 1012444313. The next prime is 1012444327. The reversal of 1012444321 is 1234442101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 976875025 + 35569296 = 31255^2 + 5964^2 .

It is not a de Polignac number, because 1012444321 - 2³ = 1012444313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012444292 and 1012444301.

It is not an unprimeable number, because it can be changed into a prime (1012444327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10331016 + ... + 10331113.

It is an arithmetic number, because the mean of its divisors is an integer number (196290235).

Almost surely, 2^1012444321 is an apocalyptic number.

It is an amenable number.

1012444321 is a deficient number, since it is larger than the sum of its proper divisors (165297089).

1012444321 is an equidigital number, since it uses as much as digits as its factorization.

1012444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20662143 (or 20662136 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1012444321 is about 31818.9302302890. The cubic root of 1012444321 is about 1004.1310181897.

Adding to 1012444321 its reverse (1234442101), we get a palindrome (2246886422).

It can be divided in two parts, 10124 and 44321, that added together give a palindrome (54445).

The spelling of 1012444321 in words is "one billion, twelve million, four hundred forty-four thousand, three hundred twenty-one".