1021330143 has 6 divisors (see below), whose sum is σ = 1475254664. Its totient is φ = 680886756.

The previous prime is 1021330139. The next prime is 1021330147. The reversal of 1021330143 is 3410331201.

It is an interprime number because it is at equal distance from previous prime (1021330139) and next prime (1021330147).

It is not a de Polignac number, because 1021330143 - 2² = 1021330139 is a prime.

It is a super-2 number, since 2×1021330143² = 2086230522000800898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021330147) 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, 56740555 + ... + 56740572.

Almost surely, 2^1021330143 is an apocalyptic number.

1021330143 is a deficient number, since it is larger than the sum of its proper divisors (453924521).

1021330143 is a wasteful number, since it uses less digits than its factorization.

1021330143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113481133 (or 113481130 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1021330143 is about 31958.2562571865. The cubic root of 1021330143 is about 1007.0600855557.

Adding to 1021330143 its reverse (3410331201), we get a palindrome (4431661344).

The spelling of 1021330143 in words is "one billion, twenty-one million, three hundred thirty thousand, one hundred forty-three".