221020000120133 has 2 divisors, whose sum is σ = 221020000120134. Its totient is φ = 221020000120132.

The previous prime is 221020000120121. The next prime is 221020000120243. The reversal of 221020000120133 is 331021000020122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177428340769729 + 43591659350404 = 13320223^2 + 6602398^2 .

It is a cyclic number.

It is not a de Polignac number, because 221020000120133 - 2²² = 221019995925829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221020008120133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110510000060066 + 110510000060067.

It is an arithmetic number, because the mean of its divisors is an integer number (110510000060067).

Almost surely, 2^{221020000120133} is an apocalyptic number.

It is an amenable number.

221020000120133 is a deficient number, since it is larger than the sum of its proper divisors (1).

221020000120133 is an equidigital number, since it uses as much as digits as its factorization.

221020000120133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221020000120133 its reverse (331021000020122), we get a palindrome (552041000140255).

The spelling of 221020000120133 in words is "two hundred twenty-one trillion, twenty billion, one hundred twenty thousand, one hundred thirty-three".