221402341 has 4 divisors (see below), whose sum is σ = 228544384. Its totient is φ = 214260300.

The previous prime is 221402329. The next prime is 221402381. The reversal of 221402341 is 143204122.

221402341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 143204122 = 2 ⋅71602061.

It is a cyclic number.

It is not a de Polignac number, because 221402341 - 2²¹ = 219305189 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 (221402381) 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, 3570975 + ... + 3571036.

It is an arithmetic number, because the mean of its divisors is an integer number (57136096).

Almost surely, 2^221402341 is an apocalyptic number.

It is an amenable number.

221402341 is a deficient number, since it is larger than the sum of its proper divisors (7142043).

221402341 is an equidigital number, since it uses as much as digits as its factorization.

221402341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142042.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 221402341 is about 14879.5947861493. The cubic root of 221402341 is about 604.9610347603.

Adding to 221402341 its reverse (143204122), we get a palindrome (364606463).

The spelling of 221402341 in words is "two hundred twenty-one million, four hundred two thousand, three hundred forty-one".