21230030213210 has 64 divisors (see below), whose sum is σ = 47403018657792. Its totient is φ = 6666049426176.

The previous prime is 21230030213201. The next prime is 21230030213221. The reversal of 21230030213210 is 1231203003212.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91733657 + ... + 91964796.

It is an arithmetic number, because the mean of its divisors is an integer number (740672166528).

Almost surely, 2^{21230030213210} is an apocalyptic number.

21230030213210 is an abundant number, since it is smaller than the sum of its proper divisors (26172988444582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21230030213210 is a wasteful number, since it uses less digits than its factorization.

21230030213210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183698607.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21230030213210 its reverse (1231203003212), we get a palindrome (22461233216422).

The spelling of 21230030213210 in words is "twenty-one trillion, two hundred thirty billion, thirty million, two hundred thirteen thousand, two hundred ten".