20021441133 has 4 divisors (see below), whose sum is σ = 26695254848. Its totient is φ = 13347627420.

The previous prime is 20021441119. The next prime is 20021441137. The reversal of 20021441133 is 33114412002.

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 not a de Polignac number, because 20021441133 - 2⁴ = 20021441117 is a prime.

It is a super-4 number, since 4×20021441133⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021441137) 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, 3336906853 + ... + 3336906858.

It is an arithmetic number, because the mean of its divisors is an integer number (6673813712).

Almost surely, 2^20021441133 is an apocalyptic number.

It is an amenable number.

20021441133 is a deficient number, since it is larger than the sum of its proper divisors (6673813715).

20021441133 is an equidigital number, since it uses as much as digits as its factorization.

20021441133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6673813714.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20021441133 its reverse (33114412002), we get a palindrome (53135853135).

The spelling of 20021441133 in words is "twenty billion, twenty-one million, four hundred forty-one thousand, one hundred thirty-three".