21120030341 has 2 divisors, whose sum is σ = 21120030342. Its totient is φ = 21120030340.

The previous prime is 21120030313. The next prime is 21120030353. The reversal of 21120030341 is 14303002112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20832592225 + 287438116 = 144335^2 + 16954^2 .

It is a cyclic number.

It is not a de Polignac number, because 21120030341 - 2²² = 21115836037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21120030391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560015170 + 10560015171.

It is an arithmetic number, because the mean of its divisors is an integer number (10560015171).

Almost surely, 2^21120030341 is an apocalyptic number.

It is an amenable number.

21120030341 is a deficient number, since it is larger than the sum of its proper divisors (1).

21120030341 is an equidigital number, since it uses as much as digits as its factorization.

21120030341 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21120030341 its reverse (14303002112), we get a palindrome (35423032453).

The spelling of 21120030341 in words is "twenty-one billion, one hundred twenty million, thirty thousand, three hundred forty-one".