1214215205 has 64 divisors (see below), whose sum is σ = 1765145088. Its totient is φ = 784650240.

The previous prime is 1214215169. The next prime is 1214215231. The reversal of 1214215205 is 5025124121.

It is not a de Polignac number, because 1214215205 - 2¹⁰ = 1214214181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7018499 + ... + 7018671.

It is an arithmetic number, because the mean of its divisors is an integer number (27580392).

Almost surely, 2^1214215205 is an apocalyptic number.

It is an amenable number.

1214215205 is a deficient number, since it is larger than the sum of its proper divisors (550929883).

1214215205 is a wasteful number, since it uses less digits than its factorization.

1214215205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1214215205 is about 34845.5908975583. The cubic root of 1214215205 is about 1066.8381943666.

Adding to 1214215205 its reverse (5025124121), we get a palindrome (6239339326).

The spelling of 1214215205 in words is "one billion, two hundred fourteen million, two hundred fifteen thousand, two hundred five".