21214040321210 has 16 divisors (see below), whose sum is σ = 41656660994592. Its totient is φ = 7714196480400.

The previous prime is 21214040321207. The next prime is 21214040321233. The reversal of 21214040321210 is 1212304041212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96427455896 + ... + 96427456115.

It is an arithmetic number, because the mean of its divisors is an integer number (2603541312162).

Almost surely, 2^{21214040321210} is an apocalyptic number.

21214040321210 is a deficient number, since it is larger than the sum of its proper divisors (20442620673382).

21214040321210 is a wasteful number, since it uses less digits than its factorization.

21214040321210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192854912029.

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

Adding to 21214040321210 its reverse (1212304041212), we get a palindrome (22426344362422).

The spelling of 21214040321210 in words is "twenty-one trillion, two hundred fourteen billion, forty million, three hundred twenty-one thousand, two hundred ten".