221100021010133 has 2 divisors, whose sum is σ = 221100021010134. Its totient is φ = 221100021010132.

The previous prime is 221100021010097. The next prime is 221100021010201. The reversal of 221100021010133 is 331010120001122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216739433417329 + 4360587592804 = 14722073^2 + 2088202^2 .

It is a cyclic number.

It is not a de Polignac number, because 221100021010133 - 2¹² = 221100021006037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221100021010933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550010505066 + 110550010505067.

It is an arithmetic number, because the mean of its divisors is an integer number (110550010505067).

Almost surely, 2^{221100021010133} is an apocalyptic number.

It is an amenable number.

221100021010133 is a deficient number, since it is larger than the sum of its proper divisors (1).

221100021010133 is an equidigital number, since it uses as much as digits as its factorization.

221100021010133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 221100021010133 its reverse (331010120001122), we get a palindrome (552110141011255).

The spelling of 221100021010133 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, ten thousand, one hundred thirty-three".