20440211001 has 32 divisors (see below), whose sum is σ = 34714920960. Its totient is φ = 10414469376.

The previous prime is 20440210993. The next prime is 20440211041. The reversal of 20440211001 is 10011204402.

It is not a de Polignac number, because 20440211001 - 2³ = 20440210993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20440211041) 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 31 ways as a sum of consecutive naturals, for example, 1499941 + ... + 1513506.

It is an arithmetic number, because the mean of its divisors is an integer number (1084841280).

Almost surely, 2^20440211001 is an apocalyptic number.

20440211001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20440211001 is a deficient number, since it is larger than the sum of its proper divisors (14274709959).

20440211001 is a wasteful number, since it uses less digits than its factorization.

20440211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013493.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20440211001 its reverse (10011204402), we get a palindrome (30451415403).

The spelling of 20440211001 in words is "twenty billion, four hundred forty million, two hundred eleven thousand, one".