20440133311201 has 4 divisors (see below), whose sum is σ = 21099492450304. Its totient is φ = 19780774172100.

The previous prime is 20440133311193. The next prime is 20440133311207. The reversal of 20440133311201 is 10211333104402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20440133311201 - 2³ = 20440133311193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20440133311207) 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, 329679569505 + ... + 329679569566.

It is an arithmetic number, because the mean of its divisors is an integer number (5274873112576).

Almost surely, 2^{20440133311201} is an apocalyptic number.

It is an amenable number.

20440133311201 is a deficient number, since it is larger than the sum of its proper divisors (659359139103).

20440133311201 is an equidigital number, since it uses as much as digits as its factorization.

20440133311201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659359139102.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20440133311201 its reverse (10211333104402), we get a palindrome (30651466415603).

The spelling of 20440133311201 in words is "twenty trillion, four hundred forty billion, one hundred thirty-three million, three hundred eleven thousand, two hundred one".