221414242414121 has 4 divisors (see below), whose sum is σ = 229049216290500. Its totient is φ = 213779268537744.

The previous prime is 221414242414067. The next prime is 221414242414151. The reversal of 221414242414121 is 121414242414122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 172838639469721 + 48575602944400 = 13146811^2 + 6969620^2 .

It is a cyclic number.

It is not a de Polignac number, because 221414242414121 - 2¹⁴ = 221414242397737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221414242414151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817486938146 + ... + 3817486938203.

It is an arithmetic number, because the mean of its divisors is an integer number (57262304072625).

Almost surely, 2^{221414242414121} is an apocalyptic number.

It is an amenable number.

221414242414121 is a deficient number, since it is larger than the sum of its proper divisors (7634973876379).

221414242414121 is an equidigital number, since it uses as much as digits as its factorization.

221414242414121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7634973876378.

The product of its digits is 32768, while the sum is 35.

Adding to 221414242414121 its reverse (121414242414122), we get a palindrome (342828484828243).

Subtracting from 221414242414121 its reverse (121414242414122), we obtain a palindrome (99999999999999).

The spelling of 221414242414121 in words is "two hundred twenty-one trillion, four hundred fourteen billion, two hundred forty-two million, four hundred fourteen thousand, one hundred twenty-one".