2660221552127 has 2 divisors, whose sum is σ = 2660221552128. Its totient is φ = 2660221552126.

The previous prime is 2660221552081. The next prime is 2660221552133. The reversal of 2660221552127 is 7212551220662.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2660221552127 - 2⁶ = 2660221552063 is a prime.

It is a super-3 number, since 3×2660221552127³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660221552187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330110776063 + 1330110776064.

It is an arithmetic number, because the mean of its divisors is an integer number (1330110776064).

Almost surely, 2^{2660221552127} is an apocalyptic number.

2660221552127 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660221552127 is an equidigital number, since it uses as much as digits as its factorization.

2660221552127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 41.

Adding to 2660221552127 its reverse (7212551220662), we get a palindrome (9872772772789).

The spelling of 2660221552127 in words is "two trillion, six hundred sixty billion, two hundred twenty-one million, five hundred fifty-two thousand, one hundred twenty-seven".