221404242101 has 8 divisors (see below), whose sum is σ = 253637321280. Its totient is φ = 189322138368.

The previous prime is 221404242091. The next prime is 221404242113. The reversal of 221404242101 is 101242404122.

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

It is a cyclic number.

It is not a de Polignac number, because 221404242101 - 2³⁰ = 220330500277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221404242121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37740716 + ... + 37746581.

It is an arithmetic number, because the mean of its divisors is an integer number (31704665160).

Almost surely, 2^221404242101 is an apocalyptic number.

It is an amenable number.

221404242101 is a deficient number, since it is larger than the sum of its proper divisors (32233079179).

221404242101 is an equidigital number, since it uses as much as digits as its factorization.

221404242101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75487723.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221404242101 its reverse (101242404122), we get a palindrome (322646646223).

The spelling of 221404242101 in words is "two hundred twenty-one billion, four hundred four million, two hundred forty-two thousand, one hundred one".