21000220441131 has 8 divisors (see below), whose sum is σ = 28459315133584. Its totient is φ = 13770636354720.

The previous prime is 21000220441117. The next prime is 21000220441139. The reversal of 21000220441131 is 13114402200012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21000220441131 - 2⁷ = 21000220441003 is a prime.

It is a super-2 number, since 2×21000220441131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21000220441098 and 21000220441107.

It is not an unprimeable number, because it can be changed into a prime (21000220441139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57377651296 + ... + 57377651661.

It is an arithmetic number, because the mean of its divisors is an integer number (3557414391698).

Almost surely, 2^{21000220441131} is an apocalyptic number.

21000220441131 is a deficient number, since it is larger than the sum of its proper divisors (7459094692453).

21000220441131 is a wasteful number, since it uses less digits than its factorization.

21000220441131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114755303021.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21000220441131 its reverse (13114402200012), we get a palindrome (34114622641143).

The spelling of 21000220441131 in words is "twenty-one trillion, two hundred twenty million, four hundred forty-one thousand, one hundred thirty-one".