212422420321 has 8 divisors (see below), whose sum is σ = 212887812200. Its totient is φ = 211957534080.

The previous prime is 212422420319. The next prime is 212422420333. The reversal of 212422420321 is 123024224212.

It can be written as a sum of positive squares in 4 ways, for example, as 13984245025 + 198438175296 = 118255^2 + 445464^2 .

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 212422420321 - 2¹ = 212422420319 is a prime.

It is a super-4 number, since 4×212422420321⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212422490321) 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, 720925 + ... + 971893.

It is an arithmetic number, because the mean of its divisors is an integer number (26610976525).

Almost surely, 2^212422420321 is an apocalyptic number.

It is an amenable number.

212422420321 is a deficient number, since it is larger than the sum of its proper divisors (465391879).

212422420321 is a wasteful number, since it uses less digits than its factorization.

212422420321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252819.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 212422420321 its reverse (123024224212), we get a palindrome (335446644533).

The spelling of 212422420321 in words is "two hundred twelve billion, four hundred twenty-two million, four hundred twenty thousand, three hundred twenty-one".