54123322221 has 6 divisors (see below), whose sum is σ = 78178132110. Its totient is φ = 36082214808.

The previous prime is 54123322213. The next prime is 54123322261. The reversal of 54123322221 is 12222332145.

54123322221 is a `hidden beast` number, since 5 + 412 + 3 + 3 + 22 + 221 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54107877321 + 15444900 = 232611^2 + 3930^2 .

It is not a de Polignac number, because 54123322221 - 2³ = 54123322213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54123322261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3006851226 + ... + 3006851243.

It is an arithmetic number, because the mean of its divisors is an integer number (13029688685).

Almost surely, 2^54123322221 is an apocalyptic number.

It is an amenable number.

54123322221 is a deficient number, since it is larger than the sum of its proper divisors (24054809889).

54123322221 is a wasteful number, since it uses less digits than its factorization.

54123322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6013702475 (or 6013702472 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

Adding to 54123322221 its reverse (12222332145), we get a palindrome (66345654366).

The spelling of 54123322221 in words is "fifty-four billion, one hundred twenty-three million, three hundred twenty-two thousand, two hundred twenty-one".