212221110243 has 8 divisors (see below), whose sum is σ = 284397833808. Its totient is φ = 140762563424.

The previous prime is 212221110217. The next prime is 212221110253. The reversal of 212221110243 is 342011122212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212221110243 - 2²¹ = 212219013091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212221110253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179543496 + ... + 179544677.

It is an arithmetic number, because the mean of its divisors is an integer number (35549729226).

Almost surely, 2^212221110243 is an apocalyptic number.

212221110243 is a deficient number, since it is larger than the sum of its proper divisors (72176723565).

212221110243 is a wasteful number, since it uses less digits than its factorization.

212221110243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359088373.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 212221110243 its reverse (342011122212), we get a palindrome (554232232455).

The spelling of 212221110243 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred ten thousand, two hundred forty-three".