212432200221 has 4 divisors (see below), whose sum is σ = 283242933632. Its totient is φ = 141621466812.

The previous prime is 212432200199. The next prime is 212432200231. The reversal of 212432200221 is 122002234212.

212432200221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212432200221 - 2²² = 212428005917 is a prime.

It is a super-4 number, since 4×212432200221⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212432200231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35405366701 + ... + 35405366706.

It is an arithmetic number, because the mean of its divisors is an integer number (70810733408).

Almost surely, 2^212432200221 is an apocalyptic number.

It is an amenable number.

212432200221 is a deficient number, since it is larger than the sum of its proper divisors (70810733411).

212432200221 is an equidigital number, since it uses as much as digits as its factorization.

212432200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70810733410.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 212432200221 its reverse (122002234212), we get a palindrome (334434434433).

The spelling of 212432200221 in words is "two hundred twelve billion, four hundred thirty-two million, two hundred thousand, two hundred twenty-one".