212404243201 has 4 divisors (see below), whose sum is σ = 212405232852. Its totient is φ = 212403253552.

The previous prime is 212404243187. The next prime is 212404243229. The reversal of 212404243201 is 102342404212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 103781266801 + 108622976400 = 322151^2 + 329580^2 .

It is a cyclic number.

It is not a de Polignac number, because 212404243201 - 2¹³ = 212404235009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212404243241) 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, 22786 + ... + 652171.

It is an arithmetic number, because the mean of its divisors is an integer number (53101308213).

Almost surely, 2^212404243201 is an apocalyptic number.

It is an amenable number.

212404243201 is a deficient number, since it is larger than the sum of its proper divisors (989651).

212404243201 is an equidigital number, since it uses as much as digits as its factorization.

212404243201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989650.

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

Adding to 212404243201 its reverse (102342404212), we get a palindrome (314746647413).

The spelling of 212404243201 in words is "two hundred twelve billion, four hundred four million, two hundred forty-three thousand, two hundred one".