1214921187 has 10 divisors (see below), whose sum is σ = 1814882388. Its totient is φ = 809947404.

The previous prime is 1214921179. The next prime is 1214921207. The reversal of 1214921187 is 7811294121.

It is not a de Polignac number, because 1214921187 - 2³ = 1214921179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1214921137) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7499433 + ... + 7499594.

Almost surely, 2^1214921187 is an apocalyptic number.

1214921187 is a deficient number, since it is larger than the sum of its proper divisors (599961201).

1214921187 is an equidigital number, since it uses as much as digits as its factorization.

1214921187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14999039 (or 14999030 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 1214921187 is about 34855.7195736941. The cubic root of 1214921187 is about 1067.0449184669.

The spelling of 1214921187 in words is "one billion, two hundred fourteen million, nine hundred twenty-one thousand, one hundred eighty-seven".