2215143665123 has 2 divisors, whose sum is σ = 2215143665124. Its totient is φ = 2215143665122.

The previous prime is 2215143665093. The next prime is 2215143665143. The reversal of 2215143665123 is 3215663415122.

2215143665123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2215143665123 - 2²⁴ = 2215126887907 is a prime.

It is a super-2 number, since 2×2215143665123² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2215143665143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107571832561 + 1107571832562.

It is an arithmetic number, because the mean of its divisors is an integer number (1107571832562).

Almost surely, 2^{2215143665123} is an apocalyptic number.

2215143665123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215143665123 is an equidigital number, since it uses as much as digits as its factorization.

2215143665123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 41.

The spelling of 2215143665123 in words is "two trillion, two hundred fifteen billion, one hundred forty-three million, six hundred sixty-five thousand, one hundred twenty-three".