1214104221 has 20 divisors (see below), whose sum is σ = 1978541664. Its totient is φ = 735820200.

The previous prime is 1214104217. The next prime is 1214104247. The reversal of 1214104221 is 1224014121.

It is not a de Polignac number, because 1214104221 - 2² = 1214104217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1214104194 and 1214104203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214104211) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 680425 + ... + 682206.

Almost surely, 2^1214104221 is an apocalyptic number.

1214104221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1214104221 is a deficient number, since it is larger than the sum of its proper divisors (764437443).

1214104221 is a wasteful number, since it uses less digits than its factorization.

1214104221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362654 (or 1362645 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1214104221 is about 34843.9983497876. The cubic root of 1214104221 is about 1066.8056889872.

Adding to 1214104221 its reverse (1224014121), we get a palindrome (2438118342).

The spelling of 1214104221 in words is "one billion, two hundred fourteen million, one hundred four thousand, two hundred twenty-one".