210021210000203 has 16 divisors (see below), whose sum is σ = 241863476532480. Its totient is φ = 178638832039200.

The previous prime is 210021210000191. The next prime is 210021210000281. The reversal of 210021210000203 is 302000012120012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210021210000203 - 2⁶ = 210021210000139 is a prime.

It is a super-2 number, since 2×210021210000203² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021210000403) 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, 28601708 + ... + 35186646.

It is an arithmetic number, because the mean of its divisors is an integer number (15116467283280).

Almost surely, 2^{210021210000203} is an apocalyptic number.

210021210000203 is a deficient number, since it is larger than the sum of its proper divisors (31842266532277).

210021210000203 is a wasteful number, since it uses less digits than its factorization.

210021210000203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6619858.

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

Adding to 210021210000203 its reverse (302000012120012), we get a palindrome (512021222120215).

The spelling of 210021210000203 in words is "two hundred ten trillion, twenty-one billion, two hundred ten million, two hundred three", and thus it is an aban number.