22054221 has 16 divisors (see below), whose sum is σ = 37340800. Its totient is φ = 12602304.

The previous prime is 22054163. The next prime is 22054223. The reversal of 22054221 is 12245022.

It is not a de Polignac number, because 22054221 - 2⁷ = 22054093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22054194 and 22054203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22054223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58156 + ... + 58533.

It is an arithmetic number, because the mean of its divisors is an integer number (2333800).

Almost surely, 2^22054221 is an apocalyptic number.

22054221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22054221 is a deficient number, since it is larger than the sum of its proper divisors (15286579).

22054221 is a wasteful number, since it uses less digits than its factorization.

22054221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116705 (or 116699 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 22054221 is about 4696.1921809057. The cubic root of 22054221 is about 280.4339402331.

Adding to 22054221 its reverse (12245022), we get a palindrome (34299243).

The spelling of 22054221 in words is "twenty-two million, fifty-four thousand, two hundred twenty-one".