2043221322001 has 4 divisors (see below), whose sum is σ = 2044246522852. Its totient is φ = 2042196121152.

The previous prime is 2043221321989. The next prime is 2043221322007. The reversal of 2043221322001 is 1002231223402.

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 1861914830400 + 181306491601 = 1364520^2 + 425801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043221322001 - 2²³ = 2043212933393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043221322007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 512597436 + ... + 512601421.

It is an arithmetic number, because the mean of its divisors is an integer number (511061630713).

Almost surely, 2^{2043221322001} is an apocalyptic number.

It is an amenable number.

2043221322001 is a deficient number, since it is larger than the sum of its proper divisors (1025200851).

2043221322001 is a wasteful number, since it uses less digits than its factorization.

2043221322001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025200850.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 2043221322001 its reverse (1002231223402), we get a palindrome (3045452545403).

The spelling of 2043221322001 in words is "two trillion, forty-three billion, two hundred twenty-one million, three hundred twenty-two thousand, one".