10404222121 has 2 divisors, whose sum is σ = 10404222122. Its totient is φ = 10404222120.

The previous prime is 10404222119. The next prime is 10404222151. The reversal of 10404222121 is 12122240401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9021200400 + 1383021721 = 94980^2 + 37189^2 .

It is a cyclic number.

It is not a de Polignac number, because 10404222121 - 2¹ = 10404222119 is a prime.

Together with 10404222119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10404222151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5202111060 + 5202111061.

It is an arithmetic number, because the mean of its divisors is an integer number (5202111061).

Almost surely, 2^10404222121 is an apocalyptic number.

It is an amenable number.

10404222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10404222121 is an equidigital number, since it uses as much as digits as its factorization.

10404222121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 10404222121 its reverse (12122240401), we get a palindrome (22526462522).

The spelling of 10404222121 in words is "ten billion, four hundred four million, two hundred twenty-two thousand, one hundred twenty-one".