212321034125 has 16 divisors (see below), whose sum is σ = 264989657088. Its totient is φ = 169848490000.

The previous prime is 212321034119. The next prime is 212321034137. The reversal of 212321034125 is 521430123212.

It is not a de Polignac number, because 212321034125 - 2²² = 212316839821 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212321034094 and 212321034103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4403900 + ... + 4451850.

It is an arithmetic number, because the mean of its divisors is an integer number (16561853568).

Almost surely, 2^212321034125 is an apocalyptic number.

212321034125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212321034125 is a deficient number, since it is larger than the sum of its proper divisors (52668622963).

212321034125 is an equidigital number, since it uses as much as digits as its factorization.

212321034125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83389 (or 83379 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 212321034125 its reverse (521430123212), we get a palindrome (733751157337).

The spelling of 212321034125 in words is "two hundred twelve billion, three hundred twenty-one million, thirty-four thousand, one hundred twenty-five".