221240240341 has 2 divisors, whose sum is σ = 221240240342.
Its totient is φ = 221240240340.
The previous prime is 221240240327. The next prime is 221240240359. The reversal of 221240240341 is 143042042122.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 193925736900 + 27314503441 = 440370^2 + 165271^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-221240240341 is a prime.
It is a super-2 number, since 2×2212402403412 (a number of 23 digits) contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (221240240381) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110620120170 + 110620120171.
It is an arithmetic number, because the mean of its divisors is an integer number (110620120171).
Almost surely, 2221240240341 is an apocalyptic number.
It is an amenable number.
221240240341 is a deficient number, since it is larger than the sum of its proper divisors (1).
221240240341 is an equidigital number, since it uses as much as digits as its factorization.
221240240341 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 3072, while the sum is 25.
Adding to 221240240341 its reverse (143042042122), we get a palindrome (364282282463).
The spelling of 221240240341 in words is "two hundred twenty-one billion, two hundred forty million, two hundred forty thousand, three hundred forty-one".