210031102221 has 8 divisors (see below), whose sum is σ = 280233416160. Its totient is φ = 139924761552.

The previous prime is 210031102201. The next prime is 210031102301. The reversal of 210031102221 is 122201130012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210031102221 - 2¹⁰ = 210031101197 is a prime.

It is a super-2 number, since 2×210031102221² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210031102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210031102201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23988210 + ... + 23996963.

It is an arithmetic number, because the mean of its divisors is an integer number (35029177020).

Almost surely, 2^210031102221 is an apocalyptic number.

It is an amenable number.

210031102221 is a deficient number, since it is larger than the sum of its proper divisors (70202313939).

210031102221 is a wasteful number, since it uses less digits than its factorization.

210031102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47986635.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 210031102221 its reverse (122201130012), we get a palindrome (332232232233).

The spelling of 210031102221 in words is "two hundred ten billion, thirty-one million, one hundred two thousand, two hundred twenty-one".