212021223201 has 12 divisors (see below), whose sum is σ = 306295749760. Its totient is φ = 141327695160.

The previous prime is 212021223187. The next prime is 212021223257. The reversal of 212021223201 is 102322120212.

212021223201 is a `hidden beast` number, since 21 + 202 + 122 + 320 + 1 = 666.

It is not a de Polignac number, because 212021223201 - 2³¹ = 209873739553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212021223301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1580905 + ... + 1709766.

Almost surely, 2^212021223201 is an apocalyptic number.

It is an amenable number.

212021223201 is a deficient number, since it is larger than the sum of its proper divisors (94274526559).

212021223201 is a wasteful number, since it uses less digits than its factorization.

212021223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297836 (or 3297833 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212021223201 its reverse (102322120212), we get a palindrome (314343343413).

The spelling of 212021223201 in words is "two hundred twelve billion, twenty-one million, two hundred twenty-three thousand, two hundred one".