212103023120 has 20 divisors (see below), whose sum is σ = 493139528940. Its totient is φ = 84841209216.

The previous prime is 212103023081. The next prime is 212103023129. The reversal of 212103023120 is 21320301212.

It can be written as a sum of positive squares in 2 ways, for example, as 47517024256 + 164585998864 = 217984^2 + 405692^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (212103023129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325643815 + ... + 1325643974.

It is an arithmetic number, because the mean of its divisors is an integer number (24656976447).

Almost surely, 2^212103023120 is an apocalyptic number.

212103023120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212103023120 is an abundant number, since it is smaller than the sum of its proper divisors (281036505820).

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

212103023120 is a wasteful number, since it uses less digits than its factorization.

212103023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651287802 (or 2651287796 counting only the distinct ones).

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

Adding to 212103023120 its reverse (21320301212), we get a palindrome (233423324332).

The spelling of 212103023120 in words is "two hundred twelve billion, one hundred three million, twenty-three thousand, one hundred twenty".