1043121199 has 2 divisors, whose sum is σ = 1043121200. Its totient is φ = 1043121198.

The previous prime is 1043121197. The next prime is 1043121217. The reversal of 1043121199 is 9911213401.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1043121199 - 2¹ = 1043121197 is a prime.

Together with 1043121197, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1043121199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043121197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521560599 + 521560600.

It is an arithmetic number, because the mean of its divisors is an integer number (521560600).

Almost surely, 2^1043121199 is an apocalyptic number.

1043121199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043121199 is an equidigital number, since it uses as much as digits as its factorization.

1043121199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1043121199 is about 32297.3868757211. The cubic root of 1043121199 is about 1014.1719403249.

The spelling of 1043121199 in words is "one billion, forty-three million, one hundred twenty-one thousand, one hundred ninety-nine".