1022431021 has 16 divisors (see below), whose sum is σ = 1091793600. Its totient is φ = 954695808.

The previous prime is 1022430991. The next prime is 1022431049. The reversal of 1022431021 is 1201342201.

It is a cyclic number.

It is not a de Polignac number, because 1022431021 - 2²³ = 1014042413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022430986 and 1022431004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022431061) 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 15 ways as a sum of consecutive naturals, for example, 670566 + ... + 672088.

It is an arithmetic number, because the mean of its divisors is an integer number (68237100).

Almost surely, 2^1022431021 is an apocalyptic number.

It is an amenable number.

1022431021 is a deficient number, since it is larger than the sum of its proper divisors (69362579).

1022431021 is a wasteful number, since it uses less digits than its factorization.

1022431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

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

The square root of 1022431021 is about 31975.4753053023. The cubic root of 1022431021 is about 1007.4217877946.

Adding to 1022431021 its reverse (1201342201), we get a palindrome (2223773222).

The spelling of 1022431021 in words is "one billion, twenty-two million, four hundred thirty-one thousand, twenty-one".