54221444121 has 16 divisors (see below), whose sum is σ = 82436223744. Its totient is φ = 31404274944.

The previous prime is 54221444119. The next prime is 54221444177. The reversal of 54221444121 is 12144412245.

It is not a de Polignac number, because 54221444121 - 2¹ = 54221444119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54221444821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40890321 + ... + 40891646.

It is an arithmetic number, because the mean of its divisors is an integer number (5152263984).

Almost surely, 2^54221444121 is an apocalyptic number.

54221444121 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

54221444121 is a deficient number, since it is larger than the sum of its proper divisors (28214779623).

54221444121 is a wasteful number, since it uses less digits than its factorization.

54221444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81782000.

The product of its digits is 10240, while the sum is 30.

Adding to 54221444121 its reverse (12144412245), we get a palindrome (66365856366).

The spelling of 54221444121 in words is "fifty-four billion, two hundred twenty-one million, four hundred forty-four thousand, one hundred twenty-one".