21322220202131 has 4 divisors (see below), whose sum is σ = 21322238073072. Its totient is φ = 21322202331192.

The previous prime is 21322220202113. The next prime is 21322220202209. The reversal of 21322220202131 is 13120202222312.

It is a happy number.

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 21322220202131 - 2³⁰ = 21321146460307 is a prime.

It is a super-2 number, since 2×21322220202131² (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 = 21322220202097 and 21322220202106.

It is not an unprimeable number, because it can be changed into a prime (21322220202331) 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, 7007060 + ... + 9578273.

It is an arithmetic number, because the mean of its divisors is an integer number (5330559518268).

Almost surely, 2^{21322220202131} is an apocalyptic number.

21322220202131 is a deficient number, since it is larger than the sum of its proper divisors (17870941).

21322220202131 is a wasteful number, since it uses less digits than its factorization.

21322220202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17870940.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21322220202131 its reverse (13120202222312), we get a palindrome (34442422424443).

The spelling of 21322220202131 in words is "twenty-one trillion, three hundred twenty-two billion, two hundred twenty million, two hundred two thousand, one hundred thirty-one".