21120100301 has 2 divisors, whose sum is σ = 21120100302. Its totient is φ = 21120100300.

The previous prime is 21120100291. The next prime is 21120100349. The reversal of 21120100301 is 10300102112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21023550025 + 96550276 = 144995^2 + 9826^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21120100301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21120100361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560050150 + 10560050151.

It is an arithmetic number, because the mean of its divisors is an integer number (10560050151).

Almost surely, 2^21120100301 is an apocalyptic number.

It is an amenable number.

21120100301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120100301 is an equidigital number, since it uses as much as digits as its factorization.

21120100301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21120100301 its reverse (10300102112), we get a palindrome (31420202413).

The spelling of 21120100301 in words is "twenty-one billion, one hundred twenty million, one hundred thousand, three hundred one".