212440030120 has 64 divisors (see below), whose sum is σ = 523559149200. Its totient is φ = 77219573760.

The previous prime is 212440030111. The next prime is 212440030147. The reversal of 212440030120 is 21030044212.

It can be written as a sum of positive squares in 8 ways, for example, as 131491813924 + 80948216196 = 362618^2 + 284514^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5366691 + ... + 5406130.

Almost surely, 2^212440030120 is an apocalyptic number.

212440030120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212440030120 is an abundant number, since it is smaller than the sum of its proper divisors (311119119080).

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

212440030120 is a wasteful number, since it uses less digits than its factorization.

212440030120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10772878 (or 10772874 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 212440030120 its reverse (21030044212), we get a palindrome (233470074332).

The spelling of 212440030120 in words is "two hundred twelve billion, four hundred forty million, thirty thousand, one hundred twenty".