1022143021 has 4 divisors (see below), whose sum is σ = 1023733312. Its totient is φ = 1020552732.

The previous prime is 1022142959. The next prime is 1022143049. The reversal of 1022143021 is 1203412201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1022143021 - 2¹⁵ = 1022110253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022142986 and 1022143004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022143121) 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 3 ways as a sum of consecutive naturals, for example, 794181 + ... + 795466.

It is an arithmetic number, because the mean of its divisors is an integer number (255933328).

Almost surely, 2^1022143021 is an apocalyptic number.

It is an amenable number.

1022143021 is a deficient number, since it is larger than the sum of its proper divisors (1590291).

1022143021 is an equidigital number, since it uses as much as digits as its factorization.

1022143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590290.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1022143021 is about 31970.9715366925. The cubic root of 1022143021 is about 1007.3271881867.

Adding to 1022143021 its reverse (1203412201), we get a palindrome (2225555222).

The spelling of 1022143021 in words is "one billion, twenty-two million, one hundred forty-three thousand, twenty-one".