220121454052433 has 2 divisors, whose sum is σ = 220121454052434. Its totient is φ = 220121454052432.

The previous prime is 220121454052361. The next prime is 220121454052471. The reversal of 220121454052433 is 334250454121022.

It is an a-pointer prime, because the next prime (220121454052471) can be obtained adding 220121454052433 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111566976625729 + 108554477426704 = 10562527^2 + 10418948^2 .

It is a cyclic number.

It is not a de Polignac number, because 220121454052433 - 2⁸ = 220121454052177 is a prime.

It is not a weakly prime, because it can be changed into another prime (220121454352433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060727026216 + 110060727026217.

It is an arithmetic number, because the mean of its divisors is an integer number (110060727026217).

Almost surely, 2^{220121454052433} is an apocalyptic number.

It is an amenable number.

220121454052433 is a deficient number, since it is larger than the sum of its proper divisors (1).

220121454052433 is an equidigital number, since it uses as much as digits as its factorization.

220121454052433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 220121454052433 in words is "two hundred twenty trillion, one hundred twenty-one billion, four hundred fifty-four million, fifty-two thousand, four hundred thirty-three".