1221114200 has 24 divisors (see below), whose sum is σ = 2839090980. Its totient is φ = 488445600.

The previous prime is 1221114157. The next prime is 1221114217. The reversal of 1221114200 is 24111221.

It is a happy number.

It is a super-2 number, since 2×1221114200² = 2982239778883280000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3052586 + ... + 3052985.

Almost surely, 2^1221114200 is an apocalyptic number.

1221114200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1221114200 is an abundant number, since it is smaller than the sum of its proper divisors (1617976780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221114200 is a wasteful number, since it uses less digits than its factorization.

1221114200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105587 (or 6105578 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1221114200 is about 34944.4444797739. Note that the first 4 decimals coincide. The cubic root of 1221114200 is about 1068.8549196496.

Adding to 1221114200 its reverse (24111221), we get a palindrome (1245225421).

The spelling of 1221114200 in words is "one billion, two hundred twenty-one million, one hundred fourteen thousand, two hundred".