21364101 has 16 divisors (see below), whose sum is σ = 34528320. Its totient is φ = 12947760.

The previous prime is 21364099. The next prime is 21364103. The reversal of 21364101 is 10146312.

It is a happy number.

21364101 is a `hidden beast` number, since 21 + 3 + 641 + 0 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (21364099) and next prime (21364103).

It is not a de Polignac number, because 21364101 - 2¹ = 21364099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21364103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35670 + ... + 36263.

It is an arithmetic number, because the mean of its divisors is an integer number (2158020).

Almost surely, 2^21364101 is an apocalyptic number.

It is an amenable number.

21364101 is a deficient number, since it is larger than the sum of its proper divisors (13164219).

21364101 is a wasteful number, since it uses less digits than its factorization.

21364101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71953 (or 71947 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 21364101 is about 4622.1316510891. The cubic root of 21364101 is about 277.4777776215.

The spelling of 21364101 in words is "twenty-one million, three hundred sixty-four thousand, one hundred one".