1043220001 has 4 divisors (see below), whose sum is σ = 1048515732. Its totient is φ = 1037924272.

The previous prime is 1043219959. The next prime is 1043220019. The reversal of 1043220001 is 1000223401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 596531776 + 446688225 = 24424^2 + 21135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043220001 - 2⁷ = 1043219873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1043220301) 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, 2647570 + ... + 2647963.

It is an arithmetic number, because the mean of its divisors is an integer number (262128933).

Almost surely, 2^1043220001 is an apocalyptic number.

It is an amenable number.

1043220001 is a deficient number, since it is larger than the sum of its proper divisors (5295731).

1043220001 is an equidigital number, since it uses as much as digits as its factorization.

1043220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5295730.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1043220001 is about 32298.9164059725. The cubic root of 1043220001 is about 1014.2039593120.

Adding to 1043220001 its reverse (1000223401), we get a palindrome (2043443402).

The spelling of 1043220001 in words is "one billion, forty-three million, two hundred twenty thousand, one".