212204021441 has 4 divisors (see below), whose sum is σ = 212248299972. Its totient is φ = 212159742912.

The previous prime is 212204021417. The next prime is 212204021443. The reversal of 212204021441 is 144120402212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162517828225 + 49686193216 = 403135^2 + 222904^2 .

It is a cyclic number.

It is not a de Polignac number, because 212204021441 - 2²⁶ = 212136912577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212204021443) 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, 22132076 + ... + 22141661.

It is an arithmetic number, because the mean of its divisors is an integer number (53062074993).

Almost surely, 2^212204021441 is an apocalyptic number.

It is an amenable number.

212204021441 is a deficient number, since it is larger than the sum of its proper divisors (44278531).

212204021441 is an equidigital number, since it uses as much as digits as its factorization.

212204021441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44278530.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 212204021441 its reverse (144120402212), we get a palindrome (356324423653).

The spelling of 212204021441 in words is "two hundred twelve billion, two hundred four million, twenty-one thousand, four hundred forty-one".