212023032221 has 64 divisors (see below), whose sum is σ = 299859947520. Its totient is φ = 144379791360.

The previous prime is 212023032203. The next prime is 212023032233. The reversal of 212023032221 is 122230320212.

It is a happy number.

It is not a de Polignac number, because 212023032221 - 2²² = 212018837917 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212023032193 and 212023032202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212023032821) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38358560 + ... + 38364086.

It is an arithmetic number, because the mean of its divisors is an integer number (4685311680).

Almost surely, 2^212023032221 is an apocalyptic number.

It is an amenable number.

212023032221 is a deficient number, since it is larger than the sum of its proper divisors (87836915299).

212023032221 is a wasteful number, since it uses less digits than its factorization.

212023032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7594.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212023032221 its reverse (122230320212), we get a palindrome (334253352433).

The spelling of 212023032221 in words is "two hundred twelve billion, twenty-three million, thirty-two thousand, two hundred twenty-one".