550221242069 has 2 divisors, whose sum is σ = 550221242070. Its totient is φ = 550221242068.

The previous prime is 550221242047. The next prime is 550221242101. The reversal of 550221242069 is 960242122055.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468522453169 + 81698788900 = 684487^2 + 285830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-550221242069 is a prime.

It is a super-2 number, since 2×550221242069² (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 (550221242369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275110621034 + 275110621035.

It is an arithmetic number, because the mean of its divisors is an integer number (275110621035).

Almost surely, 2^550221242069 is an apocalyptic number.

It is an amenable number.

550221242069 is a deficient number, since it is larger than the sum of its proper divisors (1).

550221242069 is an equidigital number, since it uses as much as digits as its factorization.

550221242069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 550221242069 in words is "five hundred fifty billion, two hundred twenty-one million, two hundred forty-two thousand, sixty-nine".