212412044420 has 24 divisors (see below), whose sum is σ = 446256589464. Its totient is φ = 84928380416.

The previous prime is 212412044347. The next prime is 212412044501. The reversal of 212412044420 is 24440214212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 990486784 + 211421557636 = 31472^2 + 459806^2 .

It is a super-2 number, since 2×212412044420² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212412044420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2229509 + ... + 2322828.

It is an arithmetic number, because the mean of its divisors is an integer number (18594024561).

Almost surely, 2^212412044420 is an apocalyptic number.

212412044420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212412044420 is an abundant number, since it is smaller than the sum of its proper divisors (233844545044).

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

212412044420 is a wasteful number, since it uses less digits than its factorization.

212412044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554679 (or 4554677 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 212412044420 its reverse (24440214212), we get a palindrome (236852258632).

The spelling of 212412044420 in words is "two hundred twelve billion, four hundred twelve million, forty-four thousand, four hundred twenty".