21034301 has 2 divisors, whose sum is σ = 21034302. Its totient is φ = 21034300.

The previous prime is 21034297. The next prime is 21034313. The reversal of 21034301 is 10343012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18705625 + 2328676 = 4325^2 + 1526^2 .

It is a cyclic number.

It is not a de Polignac number, because 21034301 - 2² = 21034297 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21034331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517150 + 10517151.

It is an arithmetic number, because the mean of its divisors is an integer number (10517151).

Almost surely, 2^21034301 is an apocalyptic number.

It is an amenable number.

21034301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21034301 is an equidigital number, since it uses as much as digits as its factorization.

21034301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 21034301 is about 4586.3167138784. The cubic root of 21034301 is about 276.0425484008.

Adding to 21034301 its reverse (10343012), we get a palindrome (31377313).

It can be divided in two parts, 2 and 1034301, that multiplied together give a palindrome (2068602).

The spelling of 21034301 in words is "twenty-one million, thirty-four thousand, three hundred one".