221421124101 has 8 divisors (see below), whose sum is σ = 295260358624. Its totient is φ = 147597986160.

The previous prime is 221421124079. The next prime is 221421124103. The reversal of 221421124101 is 101421124122.

221421124101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221421124101 - 2⁵ = 221421124069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221421124103) 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 7 ways as a sum of consecutive naturals, for example, 3992011 + ... + 4047096.

It is an arithmetic number, because the mean of its divisors is an integer number (36907544828).

Almost surely, 2^221421124101 is an apocalyptic number.

It is an amenable number.

221421124101 is a deficient number, since it is larger than the sum of its proper divisors (73839234523).

221421124101 is an equidigital number, since it uses as much as digits as its factorization.

221421124101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8048291.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221421124101 its sum of digits (21), we get a palindrome (221421124122).

Adding to 221421124101 its reverse (101421124122), we get a palindrome (322842248223).

The spelling of 221421124101 in words is "two hundred twenty-one billion, four hundred twenty-one million, one hundred twenty-four thousand, one hundred one".