3407171221 has 2 divisors, whose sum is σ = 3407171222. Its totient is φ = 3407171220.

The previous prime is 3407171153. The next prime is 3407171249. The reversal of 3407171221 is 1221717043.

3407171221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (3407171249) can be obtained adding 3407171221 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1706516100 + 1700655121 = 41310^2 + 41239^2 .

It is a cyclic number.

It is not a de Polignac number, because 3407171221 - 2²⁵ = 3373616789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3407171221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3407171291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703585610 + 1703585611.

It is an arithmetic number, because the mean of its divisors is an integer number (1703585611).

Almost surely, 2^3407171221 is an apocalyptic number.

It is an amenable number.

3407171221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3407171221 is an equidigital number, since it uses as much as digits as its factorization.

3407171221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 3407171221 is about 58370.9792705245. The cubic root of 3407171221 is about 1504.7510426562.

Adding to 3407171221 its reverse (1221717043), we get a palindrome (4628888264).

The spelling of 3407171221 in words is "three billion, four hundred seven million, one hundred seventy-one thousand, two hundred twenty-one".