1212204041 has 4 divisors (see below), whose sum is σ = 1212330000. Its totient is φ = 1212078084.

The previous prime is 1212204011. The next prime is 1212204043. The reversal of 1212204041 is 1404022121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1404022121 = 179 ⋅7843699.

It is a cyclic number.

It is not a de Polignac number, because 1212204041 - 2¹⁴ = 1212187657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1212204043) 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, 47231 + ... + 68228.

It is an arithmetic number, because the mean of its divisors is an integer number (303082500).

Almost surely, 2^1212204041 is an apocalyptic number.

It is an amenable number.

1212204041 is a deficient number, since it is larger than the sum of its proper divisors (125959).

1212204041 is a wasteful number, since it uses less digits than its factorization.

1212204041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125958.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1212204041 is about 34816.7207100267. The cubic root of 1212204041 is about 1066.2488501092.

Adding to 1212204041 its reverse (1404022121), we get a palindrome (2616226162).

The spelling of 1212204041 in words is "one billion, two hundred twelve million, two hundred four thousand, forty-one".