21202223100001 has 2 divisors, whose sum is σ = 21202223100002. Its totient is φ = 21202223100000.

The previous prime is 21202223099951. The next prime is 21202223100059. The reversal of 21202223100001 is 10000132220212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13149681810001 + 8052541290000 = 3626249^2 + 2837700^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202223100001 - 2¹⁷ = 21202222968929 is a prime.

It is not a weakly prime, because it can be changed into another prime (21202223100301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601111550000 + 10601111550001.

It is an arithmetic number, because the mean of its divisors is an integer number (10601111550001).

Almost surely, 2^{21202223100001} is an apocalyptic number.

It is an amenable number.

21202223100001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202223100001 is an equidigital number, since it uses as much as digits as its factorization.

21202223100001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21202223100001 its reverse (10000132220212), we get a palindrome (31202355320213).

The spelling of 21202223100001 in words is "twenty-one trillion, two hundred two billion, two hundred twenty-three million, one hundred thousand, one".