21210100230 has 32 divisors (see below), whose sum is σ = 55531899648. Its totient is φ = 5141842400.

The previous prime is 21210100229. The next prime is 21210100277. The reversal of 21210100230 is 3200101212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32136186 + ... + 32136845.

It is an arithmetic number, because the mean of its divisors is an integer number (1735371864).

Almost surely, 2^21210100230 is an apocalyptic number.

21210100230 is an abundant number, since it is smaller than the sum of its proper divisors (34321799418).

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

21210100230 is a wasteful number, since it uses less digits than its factorization.

21210100230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64273052.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21210100230 its reverse (3200101212), we get a palindrome (24410201442).

The spelling of 21210100230 in words is "twenty-one billion, two hundred ten million, one hundred thousand, two hundred thirty".