212021121230 has 16 divisors (see below), whose sum is σ = 383555800800. Its totient is φ = 84382274592.

The previous prime is 212021121227. The next prime is 212021121269. The reversal of 212021121230 is 32121120212.

212021121230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212021121199 and 212021121208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53269649 + ... + 53273628.

It is an arithmetic number, because the mean of its divisors is an integer number (23972237550).

Almost surely, 2^212021121230 is an apocalyptic number.

212021121230 is a deficient number, since it is larger than the sum of its proper divisors (171534679570).

212021121230 is a wasteful number, since it uses less digits than its factorization.

212021121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106543483.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212021121230 its reverse (32121120212), we get a palindrome (244142241442).

The spelling of 212021121230 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred thirty".