550601136221 has 2 divisors, whose sum is σ = 550601136222. Its totient is φ = 550601136220.

The previous prime is 550601136209. The next prime is 550601136259. The reversal of 550601136221 is 122631106055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 517124944996 + 33476191225 = 719114^2 + 182965^2 .

It is a cyclic number.

It is not a de Polignac number, because 550601136221 - 2⁶ = 550601136157 is a prime.

It is a super-2 number, since 2×550601136221² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (550601138221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275300568110 + 275300568111.

It is an arithmetic number, because the mean of its divisors is an integer number (275300568111).

Almost surely, 2^550601136221 is an apocalyptic number.

It is an amenable number.

550601136221 is a deficient number, since it is larger than the sum of its proper divisors (1).

550601136221 is an equidigital number, since it uses as much as digits as its factorization.

550601136221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 550601136221 in words is "five hundred fifty billion, six hundred one million, one hundred thirty-six thousand, two hundred twenty-one".