21413221220210 has 32 divisors (see below), whose sum is σ = 40228083067392. Its totient is φ = 8191159768000.

The previous prime is 21413221220207. The next prime is 21413221220221. The reversal of 21413221220210 is 1202212231412.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 8705309 + ... + 10890768.

It is an arithmetic number, because the mean of its divisors is an integer number (1257127595856).

Almost surely, 2^{21413221220210} is an apocalyptic number.

21413221220210 is a deficient number, since it is larger than the sum of its proper divisors (18814861847182).

21413221220210 is a wasteful number, since it uses less digits than its factorization.

21413221220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19600858.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21413221220210 its reverse (1202212231412), we get a palindrome (22615433451622).

The spelling of 21413221220210 in words is "twenty-one trillion, four hundred thirteen billion, two hundred twenty-one million, two hundred twenty thousand, two hundred ten".