21213543315110 has 32 divisors (see below), whose sum is σ = 38195417484000. Its totient is φ = 8482964497408.

The previous prime is 21213543315073. The next prime is 21213543315143. The reversal of 21213543315110 is 1151334531212.

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, 641787344 + ... + 641820396.

It is an arithmetic number, because the mean of its divisors is an integer number (1193606796375).

Almost surely, 2^{21213543315110} is an apocalyptic number.

21213543315110 is a deficient number, since it is larger than the sum of its proper divisors (16981874168890).

21213543315110 is a wasteful number, since it uses less digits than its factorization.

21213543315110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49672.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 21213543315110 its reverse (1151334531212), we get a palindrome (22364877846322).

The spelling of 21213543315110 in words is "twenty-one trillion, two hundred thirteen billion, five hundred forty-three million, three hundred fifteen thousand, one hundred ten".