212021030323 has 4 divisors (see below), whose sum is σ = 212295314448. Its totient is φ = 211746746200.

The previous prime is 212021030311. The next prime is 212021030327. The reversal of 212021030323 is 323030120212.

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 212021030323 - 2³⁷ = 74582076851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212021030323.

It is not an unprimeable number, because it can be changed into a prime (212021030327) 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, 137140903 + ... + 137142448.

It is an arithmetic number, because the mean of its divisors is an integer number (53073828612).

Almost surely, 2^212021030323 is an apocalyptic number.

212021030323 is a deficient number, since it is larger than the sum of its proper divisors (274284125).

212021030323 is an equidigital number, since it uses as much as digits as its factorization.

212021030323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274284124.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 212021030323 its reverse (323030120212), we get a palindrome (535051150535).

The spelling of 212021030323 in words is "two hundred twelve billion, twenty-one million, thirty thousand, three hundred twenty-three".