20221423123221 has 12 divisors (see below), whose sum is σ = 29237052780000. Its totient is φ = 13467873137640.

The previous prime is 20221423123067. The next prime is 20221423123273. The reversal of 20221423123221 is 12232132412202.

20221423123221 is a `hidden beast` number, since 2 + 0 + 2 + 2 + 1 + 423 + 1 + 232 + 2 + 1 = 666.

It is not a de Polignac number, because 20221423123221 - 2¹⁴ = 20221423106837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221423133221) 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, 1089624471 + ... + 1089643028.

It is an arithmetic number, because the mean of its divisors is an integer number (2436421065000).

Almost surely, 2^{20221423123221} is an apocalyptic number.

It is an amenable number.

20221423123221 is a deficient number, since it is larger than the sum of its proper divisors (9015629656779).

20221423123221 is a wasteful number, since it uses less digits than its factorization.

20221423123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179268536 (or 2179268533 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 20221423123221 its reverse (12232132412202), we get a palindrome (32453555535423).

The spelling of 20221423123221 in words is "twenty trillion, two hundred twenty-one billion, four hundred twenty-three million, one hundred twenty-three thousand, two hundred twenty-one".