212221031210 has 8 divisors (see below), whose sum is σ = 381997856196. Its totient is φ = 84888412480.

The previous prime is 212221031177. The next prime is 212221031213. The reversal of 212221031210 is 12130122212.

It can be written as a sum of positive squares in 2 ways, for example, as 199368501049 + 12852530161 = 446507^2 + 113369^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212221031213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10611051551 + ... + 10611051570.

Almost surely, 2^212221031210 is an apocalyptic number.

212221031210 is a deficient number, since it is larger than the sum of its proper divisors (169776824986).

212221031210 is a wasteful number, since it uses less digits than its factorization.

212221031210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21222103128.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212221031210 its reverse (12130122212), we get a palindrome (224351153422).

The spelling of 212221031210 in words is "two hundred twelve billion, two hundred twenty-one million, thirty-one thousand, two hundred ten".