212004412240 has 60 divisors (see below), whose sum is σ = 520218376884. Its totient is φ = 80338503168.

The previous prime is 212004412231. The next prime is 212004412273. The reversal of 212004412240 is 42214400212.

It can be written as a sum of positive squares in 2 ways, for example, as 123338630416 + 88665781824 = 351196^2 + 297768^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3641557 + ... + 3699316.

Almost surely, 2^212004412240 is an apocalyptic number.

212004412240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212004412240 is an abundant number, since it is smaller than the sum of its proper divisors (308213964644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212004412240 is a wasteful number, since it uses less digits than its factorization.

212004412240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340924 (or 7340899 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 212004412240 its reverse (42214400212), we get a palindrome (254218812452).

The spelling of 212004412240 in words is "two hundred twelve billion, four million, four hundred twelve thousand, two hundred forty".