1216214950 has 24 divisors (see below), whose sum is σ = 2299250160. Its totient is φ = 478509600.

The previous prime is 1216214941. The next prime is 1216214981. The reversal of 1216214950 is 594126121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196330 + ... + 202429.

It is an arithmetic number, because the mean of its divisors is an integer number (95802090).

Almost surely, 2^1216214950 is an apocalyptic number.

1216214950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216214950 is a deficient number, since it is larger than the sum of its proper divisors (1083035210).

1216214950 is a wasteful number, since it uses less digits than its factorization.

1216214950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398832 (or 398827 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1216214950 is about 34874.2734691348. The cubic root of 1216214950 is about 1067.4235475525.

The spelling of 1216214950 in words is "one billion, two hundred sixteen million, two hundred fourteen thousand, nine hundred fifty".