2661101123 has 2 divisors, whose sum is σ = 2661101124. Its totient is φ = 2661101122.

The previous prime is 2661101063. The next prime is 2661101143. The reversal of 2661101123 is 3211011662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2661101123 - 2⁶ = 2661101059 is a prime.

It is a super-2 number, since 2×2661101123² = 14162918373663722258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2661101143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330550561 + 1330550562.

It is an arithmetic number, because the mean of its divisors is an integer number (1330550562).

Almost surely, 2^2661101123 is an apocalyptic number.

2661101123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2661101123 is an equidigital number, since it uses as much as digits as its factorization.

2661101123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2661101123 is about 51585.8616580163. The cubic root of 2661101123 is about 1385.7571436517.

Adding to 2661101123 its reverse (3211011662), we get a palindrome (5872112785).

The spelling of 2661101123 in words is "two billion, six hundred sixty-one million, one hundred one thousand, one hundred twenty-three".