12199999954 has 4 divisors (see below), whose sum is σ = 18299999934. Its totient is φ = 6099999976.

The previous prime is 12199999943. The next prime is 12199999993. The reversal of 12199999954 is 45999999121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45999999121 = 168803 ⋅272507.

It can be written as a sum of positive squares in only one way, i.e., 12029044329 + 170955625 = 109677^2 + 13075^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12199999954.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3049999987 + ... + 3049999990.

Almost surely, 2^12199999954 is an apocalyptic number.

12199999954 is a deficient number, since it is larger than the sum of its proper divisors (6099999980).

12199999954 is an equidigital number, since it uses as much as digits as its factorization.

12199999954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6099999979.

The product of its digits is 21257640, while the sum is 67.

The spelling of 12199999954 in words is "twelve billion, one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-four".