21202332101 has 2 divisors, whose sum is σ = 21202332102. Its totient is φ = 21202332100.

The previous prime is 21202332083. The next prime is 21202332163. The reversal of 21202332101 is 10123320212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11390439076 + 9811893025 = 106726^2 + 99055^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202332101 - 2¹⁸ = 21202069957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21202332101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21202332401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601166050 + 10601166051.

It is an arithmetic number, because the mean of its divisors is an integer number (10601166051).

Almost surely, 2^21202332101 is an apocalyptic number.

It is an amenable number.

21202332101 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202332101 is an equidigital number, since it uses as much as digits as its factorization.

21202332101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21202332101 its reverse (10123320212), we get a palindrome (31325652313).

The spelling of 21202332101 in words is "twenty-one billion, two hundred two million, three hundred thirty-two thousand, one hundred one".