21221132322301 has 2 divisors, whose sum is σ = 21221132322302. Its totient is φ = 21221132322300.

The previous prime is 21221132322293. The next prime is 21221132322343. The reversal of 21221132322301 is 10322323112212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17074655358201 + 4146476964100 = 4132149^2 + 2036290^2 .

It is a cyclic number.

It is not a de Polignac number, because 21221132322301 - 2³ = 21221132322293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21221132320301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610566161150 + 10610566161151.

It is an arithmetic number, because the mean of its divisors is an integer number (10610566161151).

Almost surely, 2^{21221132322301} is an apocalyptic number.

It is an amenable number.

21221132322301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21221132322301 is an equidigital number, since it uses as much as digits as its factorization.

21221132322301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 21221132322301 its reverse (10322323112212), we get a palindrome (31543455434513).

The spelling of 21221132322301 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred thirty-two million, three hundred twenty-two thousand, three hundred one".