21132221000131 has 4 divisors (see below), whose sum is σ = 22051013217552. Its totient is φ = 20213428782712.

The previous prime is 21132221000071. The next prime is 21132221000161. The reversal of 21132221000131 is 13100012223112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21132221000131 - 2¹⁹ = 21132220475843 is a prime.

It is a super-2 number, since 2×21132221000131² (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 = 21132221000099 and 21132221000108.

It is not an unprimeable number, because it can be changed into a prime (21132221000161) 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, 459396108676 + ... + 459396108721.

It is an arithmetic number, because the mean of its divisors is an integer number (5512753304388).

Almost surely, 2^{21132221000131} is an apocalyptic number.

21132221000131 is a deficient number, since it is larger than the sum of its proper divisors (918792217421).

21132221000131 is an equidigital number, since it uses as much as digits as its factorization.

21132221000131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918792217420.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21132221000131 its reverse (13100012223112), we get a palindrome (34232233223243).

The spelling of 21132221000131 in words is "twenty-one trillion, one hundred thirty-two billion, two hundred twenty-one million, one hundred thirty-one", and thus it is an aban number.