40601221 has 2 divisors, whose sum is σ = 40601222. Its totient is φ = 40601220.

The previous prime is 40601203. The next prime is 40601237. The reversal of 40601221 is 12210604.

It is an a-pointer prime, because the next prime (40601237) can be obtained adding 40601221 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34281025 + 6320196 = 5855^2 + 2514^2 .

It is a cyclic number.

It is not a de Polignac number, because 40601221 - 2²³ = 32212613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40601195 and 40601204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40601201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20300610 + 20300611.

It is an arithmetic number, because the mean of its divisors is an integer number (20300611).

Almost surely, 2^40601221 is an apocalyptic number.

It is an amenable number.

40601221 is a deficient number, since it is larger than the sum of its proper divisors (1).

40601221 is an equidigital number, since it uses as much as digits as its factorization.

40601221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 40601221 is about 6371.9087407150. The cubic root of 40601221 is about 343.7001313443.

Adding to 40601221 its reverse (12210604), we get a palindrome (52811825).

The spelling of 40601221 in words is "forty million, six hundred one thousand, two hundred twenty-one".