1214203217 has 4 divisors (see below), whose sum is σ = 1240037376. Its totient is φ = 1188369060.

The previous prime is 1214203187. The next prime is 1214203241. The reversal of 1214203217 is 7123024121.

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.

It is a cyclic number.

It is not a de Polignac number, because 1214203217 - 2²⁴ = 1197426001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1214203192 and 1214203201.

It is not an unprimeable number, because it can be changed into a prime (1214203247) 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, 12917009 + ... + 12917102.

It is an arithmetic number, because the mean of its divisors is an integer number (310009344).

Almost surely, 2^1214203217 is an apocalyptic number.

It is an amenable number.

1214203217 is a deficient number, since it is larger than the sum of its proper divisors (25834159).

1214203217 is an equidigital number, since it uses as much as digits as its factorization.

1214203217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25834158.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1214203217 is about 34845.4188811098. The cubic root of 1214203217 is about 1066.8346833749.

Adding to 1214203217 its reverse (7123024121), we get a palindrome (8337227338).

The spelling of 1214203217 in words is "one billion, two hundred fourteen million, two hundred three thousand, two hundred seventeen".