20211441001 has 4 divisors (see below), whose sum is σ = 20340176452. Its totient is φ = 20082705552.

The previous prime is 20211440999. The next prime is 20211441011. The reversal of 20211441001 is 10014411202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10014411202 = 2 ⋅5007205601.

It can be written as a sum of positive squares in 2 ways, for example, as 1726319401 + 18485121600 = 41549^2 + 135960^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211441001 - 2¹ = 20211440999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211441011) 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, 64367490 + ... + 64367803.

It is an arithmetic number, because the mean of its divisors is an integer number (5085044113).

Almost surely, 2^20211441001 is an apocalyptic number.

It is an amenable number.

20211441001 is a deficient number, since it is larger than the sum of its proper divisors (128735451).

20211441001 is a wasteful number, since it uses less digits than its factorization.

20211441001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128735450.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211441001 its reverse (10014411202), we get a palindrome (30225852203).

The spelling of 20211441001 in words is "twenty billion, two hundred eleven million, four hundred forty-one thousand, one".