212021031203 has 4 divisors (see below), whose sum is σ = 212023688520. Its totient is φ = 212018373888.

The previous prime is 212021031199. The next prime is 212021031223. The reversal of 212021031203 is 302130120212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212021031203 - 2² = 212021031199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021031223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1205150 + ... + 1369827.

It is an arithmetic number, because the mean of its divisors is an integer number (53005922130).

Almost surely, 2^212021031203 is an apocalyptic number.

212021031203 is a deficient number, since it is larger than the sum of its proper divisors (2657317).

212021031203 is an equidigital number, since it uses as much as digits as its factorization.

212021031203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657316.

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

Adding to 212021031203 its reverse (302130120212), we get a palindrome (514151151415).

The spelling of 212021031203 in words is "two hundred twelve billion, twenty-one million, thirty-one thousand, two hundred three".