123149221966 has 8 divisors (see below), whose sum is σ = 184765914864. Its totient is φ = 61560583680.

The previous prime is 123149221961. The next prime is 123149221999. The reversal of 123149221966 is 669122941321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×123149221966² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123149221961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7002675 + ... + 7020238.

It is an arithmetic number, because the mean of its divisors is an integer number (23095739358).

Almost surely, 2^123149221966 is an apocalyptic number.

123149221966 is a deficient number, since it is larger than the sum of its proper divisors (61616692898).

123149221966 is a wasteful number, since it uses less digits than its factorization.

123149221966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14027306.

The product of its digits is 279936, while the sum is 46.

The spelling of 123149221966 in words is "one hundred twenty-three billion, one hundred forty-nine million, two hundred twenty-one thousand, nine hundred sixty-six".