240410221 has 2 divisors, whose sum is σ = 240410222. Its totient is φ = 240410220.

The previous prime is 240410213. The next prime is 240410227. The reversal of 240410221 is 122014042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231344100 + 9066121 = 15210^2 + 3011^2 .

It is a cyclic number.

It is not a de Polignac number, because 240410221 - 2³ = 240410213 is a prime.

It is a super-2 number, since 2×240410221² = 115594148722537682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240410195 and 240410204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240410227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120205110 + 120205111.

It is an arithmetic number, because the mean of its divisors is an integer number (120205111).

Almost surely, 2^240410221 is an apocalyptic number.

It is an amenable number.

240410221 is a deficient number, since it is larger than the sum of its proper divisors (1).

240410221 is an equidigital number, since it uses as much as digits as its factorization.

240410221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 240410221 is about 15505.1675579466. The cubic root of 240410221 is about 621.8003696574.

Adding to 240410221 its reverse (122014042), we get a palindrome (362424263).

The spelling of 240410221 in words is "two hundred forty million, four hundred ten thousand, two hundred twenty-one".