212440444402 has 8 divisors (see below), whose sum is σ = 323025881436. Its totient is φ = 104765150592.

The previous prime is 212440444397. The next prime is 212440444493. The reversal of 212440444402 is 204444044212.

It is a happy number.

212440444402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 204077159001 + 8363285401 = 451749^2 + 91451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727535623 + ... + 727535914.

Almost surely, 2^212440444402 is an apocalyptic number.

212440444402 is a deficient number, since it is larger than the sum of its proper divisors (110585437034).

212440444402 is a wasteful number, since it uses less digits than its factorization.

212440444402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455071612.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 212440444402 its reverse (204444044212), we get a palindrome (416884488614).

The spelling of 212440444402 in words is "two hundred twelve billion, four hundred forty million, four hundred forty-four thousand, four hundred two".