21414101 has 4 divisors (see below), whose sum is σ = 22673772. Its totient is φ = 20154432.

The previous prime is 21414091. The next prime is 21414103. The reversal of 21414101 is 10141412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14070001 + 7344100 = 3751^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 21414101 - 2⁶ = 21414037 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21414103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629810 + ... + 629843.

It is an arithmetic number, because the mean of its divisors is an integer number (5668443).

Almost surely, 2^21414101 is an apocalyptic number.

It is an amenable number.

21414101 is a deficient number, since it is larger than the sum of its proper divisors (1259671).

21414101 is a wasteful number, since it uses less digits than its factorization.

21414101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259670.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 21414101 is about 4627.5372499851. The cubic root of 21414101 is about 277.6940762863.

Adding to 21414101 its reverse (10141412), we get a palindrome (31555513).

The spelling of 21414101 in words is "twenty-one million, four hundred fourteen thousand, one hundred one".