122404045532221 has 2 divisors, whose sum is σ = 122404045532222. Its totient is φ = 122404045532220.

The previous prime is 122404045532137. The next prime is 122404045532261. The reversal of 122404045532221 is 122235540404221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85664021096196 + 36740024436025 = 9255486^2 + 6061355^2 .

It is a cyclic number.

It is not a de Polignac number, because 122404045532221 - 2¹⁷ = 122404045401149 is a prime.

It is a super-2 number, since 2×122404045532221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122404045532261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61202022766110 + 61202022766111.

It is an arithmetic number, because the mean of its divisors is an integer number (61202022766111).

Almost surely, 2^{122404045532221} is an apocalyptic number.

It is an amenable number.

122404045532221 is a deficient number, since it is larger than the sum of its proper divisors (1).

122404045532221 is an equidigital number, since it uses as much as digits as its factorization.

122404045532221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 37.

Adding to 122404045532221 its reverse (122235540404221), we get a palindrome (244639585936442).

The spelling of 122404045532221 in words is "one hundred twenty-two trillion, four hundred four billion, forty-five million, five hundred thirty-two thousand, two hundred twenty-one".