212123030120 has 64 divisors (see below), whose sum is σ = 508624427520. Its totient is φ = 79433288704.

The previous prime is 212123030111. The next prime is 212123030123. The reversal of 212123030120 is 21030321212.

It is not an unprimeable number, because it can be changed into a prime (212123030123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2409617 + ... + 2496096.

It is an arithmetic number, because the mean of its divisors is an integer number (7947256680).

Almost surely, 2^212123030120 is an apocalyptic number.

212123030120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212123030120 is an abundant number, since it is smaller than the sum of its proper divisors (296501397400).

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

212123030120 is a wasteful number, since it uses less digits than its factorization.

212123030120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905794 (or 4905790 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 212123030120 its reverse (21030321212), we get a palindrome (233153351332).

The spelling of 212123030120 in words is "two hundred twelve billion, one hundred twenty-three million, thirty thousand, one hundred twenty".