20230101211221 has 60 divisors (see below), whose sum is σ = 33265972133856. Its totient is φ = 12242712152880.

The previous prime is 20230101211219. The next prime is 20230101211223. The reversal of 20230101211221 is 12211210103202.

20230101211221 is a `hidden beast` number, since 2 + 0 + 230 + 1 + 0 + 1 + 211 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (20230101211219) and next prime (20230101211223).

It is not a de Polignac number, because 20230101211221 - 2¹ = 20230101211219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20230101211194 and 20230101211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230101211223) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5183040 + ... + 8205126.

Almost surely, 2^{20230101211221} is an apocalyptic number.

It is an amenable number.

20230101211221 is a deficient number, since it is larger than the sum of its proper divisors (13035870922635).

20230101211221 is a wasteful number, since it uses less digits than its factorization.

20230101211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3022804 (or 3022784 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20230101211221 its reverse (12211210103202), we get a palindrome (32441311314423).

The spelling of 20230101211221 in words is "twenty trillion, two hundred thirty billion, one hundred one million, two hundred eleven thousand, two hundred twenty-one".