2179194451123 has 2 divisors, whose sum is σ = 2179194451124. Its totient is φ = 2179194451122.

The previous prime is 2179194451117. The next prime is 2179194451211. The reversal of 2179194451123 is 3211544919712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2179194451123 - 2²¹ = 2179192353971 is a prime.

It is a super-2 number, since 2×2179194451123² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2179194251123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089597225561 + 1089597225562.

It is an arithmetic number, because the mean of its divisors is an integer number (1089597225562).

Almost surely, 2^{2179194451123} is an apocalyptic number.

2179194451123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2179194451123 is an equidigital number, since it uses as much as digits as its factorization.

2179194451123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The spelling of 2179194451123 in words is "two trillion, one hundred seventy-nine billion, one hundred ninety-four million, four hundred fifty-one thousand, one hundred twenty-three".