21132220210001 has 4 divisors (see below), whose sum is σ = 21132772392612. Its totient is φ = 21131668027392.

The previous prime is 21132220209979. The next prime is 21132220210033. The reversal of 21132220210001 is 10001202223112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11846152446976 + 9286067763025 = 3441824^2 + 3047305^2 .

It is a cyclic number.

It is not a de Polignac number, because 21132220210001 - 2³⁴ = 21115040340817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21132220210051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276033896 + ... + 276110441.

It is an arithmetic number, because the mean of its divisors is an integer number (5283193098153).

Almost surely, 2^{21132220210001} is an apocalyptic number.

It is an amenable number.

21132220210001 is a deficient number, since it is larger than the sum of its proper divisors (552182611).

21132220210001 is an equidigital number, since it uses as much as digits as its factorization.

21132220210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552182610.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21132220210001 its reverse (10001202223112), we get a palindrome (31133422433113).

The spelling of 21132220210001 in words is "twenty-one trillion, one hundred thirty-two billion, two hundred twenty million, two hundred ten thousand, one".