21301210210 has 32 divisors (see below), whose sum is σ = 45330658560. Its totient is φ = 7051434432.

The previous prime is 21301210207. The next prime is 21301210247. The reversal of 21301210210 is 1201210312.

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, 5244574 + ... + 5248633.

It is an arithmetic number, because the mean of its divisors is an integer number (1416583080).

Almost surely, 2^21301210210 is an apocalyptic number.

21301210210 is an abundant number, since it is smaller than the sum of its proper divisors (24029448350).

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

21301210210 is a wasteful number, since it uses less digits than its factorization.

21301210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10493250.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21301210210 its reverse (1201210312), we get a palindrome (22502420522).

The spelling of 21301210210 in words is "twenty-one billion, three hundred one million, two hundred ten thousand, two hundred ten".