21222021232301 has 2 divisors, whose sum is σ = 21222021232302. Its totient is φ = 21222021232300.

The previous prime is 21222021232249. The next prime is 21222021232327. The reversal of 21222021232301 is 10323212022212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15156149748100 + 6065871484201 = 3893090^2 + 2462899^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222021232301 - 2²² = 21222017037997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222021232361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611010616150 + 10611010616151.

It is an arithmetic number, because the mean of its divisors is an integer number (10611010616151).

Almost surely, 2^{21222021232301} is an apocalyptic number.

It is an amenable number.

21222021232301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222021232301 is an equidigital number, since it uses as much as digits as its factorization.

21222021232301 is an evil number, because the sum of its binary digits is even.

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

Adding to 21222021232301 its reverse (10323212022212), we get a palindrome (31545233254513).

The spelling of 21222021232301 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-one million, two hundred thirty-two thousand, three hundred one".