20443414221 has 12 divisors (see below), whose sum is σ = 29545387872. Its totient is φ = 13621552776.

The previous prime is 20443414151. The next prime is 20443414223. The reversal of 20443414221 is 12241434402.

20443414221 is a `hidden beast` number, since 2 + 0 + 4 + 434 + 1 + 4 + 221 = 666.

It is not a de Polignac number, because 20443414221 - 2¹³ = 20443406029 is a prime.

It is a super-2 number, since 2×20443414221² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20443414223) 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, 598291 + ... + 631536.

It is an arithmetic number, because the mean of its divisors is an integer number (2462115656).

Almost surely, 2^20443414221 is an apocalyptic number.

It is an amenable number.

20443414221 is a deficient number, since it is larger than the sum of its proper divisors (9101973651).

20443414221 is a wasteful number, since it uses less digits than its factorization.

20443414221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231680 (or 1231677 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 20443414221 its reverse (12241434402), we get a palindrome (32684848623).

The spelling of 20443414221 in words is "twenty billion, four hundred forty-three million, four hundred fourteen thousand, two hundred twenty-one".