1221121114 has 16 divisors (see below), whose sum is σ = 1850127840. Its totient is φ = 604422000.

The previous prime is 1221121073. The next prime is 1221121117. The reversal of 1221121114 is 4111211221.

It is a super-2 number, since 2×1221121114² = 2982273550113201992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1221121117) by changing a digit.

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, 373989 + ... + 377239.

It is an arithmetic number, because the mean of its divisors is an integer number (115632990).

Almost surely, 2^1221121114 is an apocalyptic number.

1221121114 is a deficient number, since it is larger than the sum of its proper divisors (629006726).

1221121114 is a wasteful number, since it uses less digits than its factorization.

1221121114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5085.

The product of its digits is 32, while the sum is 16.

The square root of 1221121114 is about 34944.5434080916. The cubic root of 1221121114 is about 1068.8569369463.

Adding to 1221121114 its reverse (4111211221), we get a palindrome (5332332335).

The spelling of 1221121114 in words is "one billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred fourteen".