21412301 has 2 divisors, whose sum is σ = 21412302. Its totient is φ = 21412300.

The previous prime is 21412277. The next prime is 21412309. The reversal of 21412301 is 10321412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17859076 + 3553225 = 4226^2 + 1885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21412301 is a prime.

It is a super-2 number, since 2×21412301² = 916973268229202, which contains 22 as substring.

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 (21412309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706150 + 10706151.

It is an arithmetic number, because the mean of its divisors is an integer number (10706151).

Almost surely, 2^21412301 is an apocalyptic number.

It is an amenable number.

21412301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412301 is an equidigital number, since it uses as much as digits as its factorization.

21412301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21412301 is about 4627.3427579984. The cubic root of 21412301 is about 277.6862953800.

Adding to 21412301 its reverse (10321412), we get a palindrome (31733713).

The spelling of 21412301 in words is "twenty-one million, four hundred twelve thousand, three hundred one".