21210010000201 has 4 divisors (see below), whose sum is σ = 23138192727504. Its totient is φ = 19281827272900.

The previous prime is 21210010000183. The next prime is 21210010000243. The reversal of 21210010000201 is 10200001001212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21210010000201 - 2¹¹ = 21210009998153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21210010040201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 964091363635 + ... + 964091363656.

It is an arithmetic number, because the mean of its divisors is an integer number (5784548181876).

Almost surely, 2^{21210010000201} is an apocalyptic number.

It is an amenable number.

21210010000201 is a deficient number, since it is larger than the sum of its proper divisors (1928182727303).

21210010000201 is a wasteful number, since it uses less digits than its factorization.

21210010000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928182727302.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21210010000201 its reverse (10200001001212), we get a palindrome (31410011001413).

The spelling of 21210010000201 in words is "twenty-one trillion, two hundred ten billion, ten million, two hundred one", and thus it is an aban number.