21230134301 has 2 divisors, whose sum is σ = 21230134302. Its totient is φ = 21230134300.

The previous prime is 21230134297. The next prime is 21230134339. The reversal of 21230134301 is 10343103212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19063324900 + 2166809401 = 138070^2 + 46549^2 .

It is a cyclic number.

It is not a de Polignac number, because 21230134301 - 2² = 21230134297 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21230134391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615067150 + 10615067151.

It is an arithmetic number, because the mean of its divisors is an integer number (10615067151).

Almost surely, 2^21230134301 is an apocalyptic number.

It is an amenable number.

21230134301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230134301 is an equidigital number, since it uses as much as digits as its factorization.

21230134301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21230134301 its reverse (10343103212), we get a palindrome (31573237513).

The spelling of 21230134301 in words is "twenty-one billion, two hundred thirty million, one hundred thirty-four thousand, three hundred one".