1213441199 has 4 divisors (see below), whose sum is σ = 1266199536. Its totient is φ = 1160682864.

The previous prime is 1213441189. The next prime is 1213441211. The reversal of 1213441199 is 9911443121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1213441199 - 2¹² = 1213437103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213441109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26379134 + ... + 26379179.

It is an arithmetic number, because the mean of its divisors is an integer number (316549884).

Almost surely, 2^1213441199 is an apocalyptic number.

1213441199 is a deficient number, since it is larger than the sum of its proper divisors (52758337).

1213441199 is an equidigital number, since it uses as much as digits as its factorization.

1213441199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52758336.

The product of its digits is 7776, while the sum is 35.

The square root of 1213441199 is about 34834.4829012862. The cubic root of 1213441199 is about 1066.6114595234.

The spelling of 1213441199 in words is "one billion, two hundred thirteen million, four hundred forty-one thousand, one hundred ninety-nine".