221133313048873 has 2 divisors, whose sum is σ = 221133313048874. Its totient is φ = 221133313048872.

The previous prime is 221133313048871. The next prime is 221133313048903. The reversal of 221133313048873 is 378840313331122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115878270914329 + 105255042134544 = 10764677^2 + 10259388^2 .

It is a cyclic number.

It is not a de Polignac number, because 221133313048873 - 2¹ = 221133313048871 is a prime.

Together with 221133313048871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (221133313048871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110566656524436 + 110566656524437.

It is an arithmetic number, because the mean of its divisors is an integer number (110566656524437).

Almost surely, 2^{221133313048873} is an apocalyptic number.

It is an amenable number.

221133313048873 is a deficient number, since it is larger than the sum of its proper divisors (1).

221133313048873 is an equidigital number, since it uses as much as digits as its factorization.

221133313048873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 49.

Adding to 221133313048873 its reverse (378840313331122), we get a palindrome (599973626379995).

The spelling of 221133313048873 in words is "two hundred twenty-one trillion, one hundred thirty-three billion, three hundred thirteen million, forty-eight thousand, eight hundred seventy-three".