34644722221 has 2 divisors, whose sum is σ = 34644722222. Its totient is φ = 34644722220.

The previous prime is 34644722209. The next prime is 34644722237. The reversal of 34644722221 is 12222744643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28454966596 + 6189755625 = 168686^2 + 78675^2 .

It is a cyclic number.

It is not a de Polignac number, because 34644722221 - 2²⁷ = 34510504493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34644722261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17322361110 + 17322361111.

It is an arithmetic number, because the mean of its divisors is an integer number (17322361111).

Almost surely, 2^34644722221 is an apocalyptic number.

It is an amenable number.

34644722221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34644722221 is an equidigital number, since it uses as much as digits as its factorization.

34644722221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 37.

The spelling of 34644722221 in words is "thirty-four billion, six hundred forty-four million, seven hundred twenty-two thousand, two hundred twenty-one".