1051143221 has 8 divisors (see below), whose sum is σ = 1056616320. Its totient is φ = 1045683072.

The previous prime is 1051143151. The next prime is 1051143229. The reversal of 1051143221 is 1223411501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1051143221 - 2¹⁸ = 1050881077 is a prime.

It is a super-2 number, since 2×1051143221² = 2209804142108509682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051143193 and 1051143202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051143229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187700 + ... + 193218.

It is an arithmetic number, because the mean of its divisors is an integer number (132077040).

Almost surely, 2^1051143221 is an apocalyptic number.

It is an amenable number.

1051143221 is a deficient number, since it is larger than the sum of its proper divisors (5473099).

1051143221 is an equidigital number, since it uses as much as digits as its factorization.

1051143221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475.

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

The square root of 1051143221 is about 32421.3389760509. The cubic root of 1051143221 is about 1016.7651010070.

Adding to 1051143221 its reverse (1223411501), we get a palindrome (2274554722).

The spelling of 1051143221 in words is "one billion, fifty-one million, one hundred forty-three thousand, two hundred twenty-one".