1032001021 has 4 divisors (see below), whose sum is σ = 1032932700. Its totient is φ = 1031069344.

The previous prime is 1032000973. The next prime is 1032001039. The reversal of 1032001021 is 1201002301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1201002301 = 12253 ⋅98017.

It can be written as a sum of positive squares in 2 ways, for example, as 141276996 + 890724025 = 11886^2 + 29845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1032001021 - 2¹¹ = 1031998973 is a prime.

It is a super-2 number, since 2×1032001021² = 2130052214690084882, 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 = 1032000989 and 1032001007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1032001081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464176 + ... + 466393.

It is an arithmetic number, because the mean of its divisors is an integer number (258233175).

Almost surely, 2^1032001021 is an apocalyptic number.

It is an amenable number.

1032001021 is a deficient number, since it is larger than the sum of its proper divisors (931679).

1032001021 is an equidigital number, since it uses as much as digits as its factorization.

1032001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931678.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1032001021 is about 32124.7726995850. The cubic root of 1032001021 is about 1010.5552027028. Note that the first 3 decimals are identical.

Adding to 1032001021 its reverse (1201002301), we get a palindrome (2233003322).

The spelling of 1032001021 in words is "one billion, thirty-two million, one thousand, twenty-one".