34621406221 has 2 divisors, whose sum is σ = 34621406222. Its totient is φ = 34621406220.

The previous prime is 34621406207. The next prime is 34621406231. The reversal of 34621406221 is 12260412643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31270617225 + 3350788996 = 176835^2 + 57886^2 .

It is a cyclic number.

It is not a de Polignac number, because 34621406221 - 2¹³ = 34621398029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34621406201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17310703110 + 17310703111.

It is an arithmetic number, because the mean of its divisors is an integer number (17310703111).

Almost surely, 2^34621406221 is an apocalyptic number.

It is an amenable number.

34621406221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34621406221 is an equidigital number, since it uses as much as digits as its factorization.

34621406221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 34621406221 its reverse (12260412643), we get a palindrome (46881818864).

The spelling of 34621406221 in words is "thirty-four billion, six hundred twenty-one million, four hundred six thousand, two hundred twenty-one".