1221111114 has 16 divisors (see below), whose sum is σ = 2570760480. Its totient is φ = 385614000.

The previous prime is 1221111097. The next prime is 1221111167. The reversal of 1221111114 is 4111111221.

It is a happy number.

It is a super-2 number, since 2×1221111114² = 2982224705468641992, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1221111093 and 1221111102.

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 7 ways as a sum of consecutive naturals, for example, 5355637 + ... + 5355864.

It is an arithmetic number, because the mean of its divisors is an integer number (160672530).

Almost surely, 2^1221111114 is an apocalyptic number.

1221111114 is an abundant number, since it is smaller than the sum of its proper divisors (1349649366).

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

1221111114 is a wasteful number, since it uses less digits than its factorization.

1221111114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10711525.

The product of its digits is 16, while the sum is 15.

The square root of 1221111114 is about 34944.4003239432. The cubic root of 1221111114 is about 1068.8540192454.

Adding to 1221111114 its reverse (4111111221), we get a palindrome (5332222335).

The spelling of 1221111114 in words is "one billion, two hundred twenty-one million, one hundred eleven thousand, one hundred fourteen".