438242112212 has 12 divisors (see below), whose sum is σ = 768430426260. Its totient is φ = 218690561856.

The previous prime is 438242112169. The next prime is 438242112229. The reversal of 438242112212 is 212211242834.

It can be written as a sum of positive squares in 2 ways, for example, as 128912593936 + 309329518276 = 359044^2 + 556174^2 .

It is a super-2 number, since 2×438242112212² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 107621273 + ... + 107625344.

It is an arithmetic number, because the mean of its divisors is an integer number (64035868855).

Almost surely, 2^438242112212 is an apocalyptic number.

It is an amenable number.

438242112212 is a deficient number, since it is larger than the sum of its proper divisors (330188314048).

438242112212 is a wasteful number, since it uses less digits than its factorization.

438242112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215247130 (or 215247128 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

The spelling of 438242112212 in words is "four hundred thirty-eight billion, two hundred forty-two million, one hundred twelve thousand, two hundred twelve".