221210103131211 has 32 divisors (see below), whose sum is σ = 299795821056000. Its totient is φ = 145074781041920.

The previous prime is 221210103131209. The next prime is 221210103131243. The reversal of 221210103131211 is 112131301012122.

221210103131211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221210103131211 - 2¹ = 221210103131209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221210103139211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13673575 + ... + 25087583.

It is an arithmetic number, because the mean of its divisors is an integer number (9368619408000).

Almost surely, 2^{221210103131211} is an apocalyptic number.

221210103131211 is a deficient number, since it is larger than the sum of its proper divisors (78585717924789).

221210103131211 is a wasteful number, since it uses less digits than its factorization.

221210103131211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11414579.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 221210103131211 its reverse (112131301012122), we get a palindrome (333341404143333).

The spelling of 221210103131211 in words is "two hundred twenty-one trillion, two hundred ten billion, one hundred three million, one hundred thirty-one thousand, two hundred eleven".