212230122221 has 8 divisors (see below), whose sum is σ = 231774609024. Its totient is φ = 193145505840.

The previous prime is 212230122199. The next prime is 212230122241. The reversal of 212230122221 is 122221032212.

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 212230122221 - 2¹⁴ = 212230105837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212230122193 and 212230122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212230122241) 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, 114966641 + ... + 114968486.

It is an arithmetic number, because the mean of its divisors is an integer number (28971826128).

Almost surely, 2^212230122221 is an apocalyptic number.

It is an amenable number.

212230122221 is a deficient number, since it is larger than the sum of its proper divisors (19544486803).

212230122221 is a wasteful number, since it uses less digits than its factorization.

212230122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229935211.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 212230122221 its reverse (122221032212), we get a palindrome (334451154433).

Subtracting from 212230122221 its reverse (122221032212), we obtain a palindrome (90009090009).

The spelling of 212230122221 in words is "two hundred twelve billion, two hundred thirty million, one hundred twenty-two thousand, two hundred twenty-one".