1121214120 has 128 divisors (see below), whose sum is σ = 3780000000. Its totient is φ = 263983104.

The previous prime is 1121214103. The next prime is 1121214131. The reversal of 1121214120 is 214121211.

It is a super-2 number, since 2×1121214120² = 2514242205774748800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1121214120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20256 + ... + 51504.

It is an arithmetic number, because the mean of its divisors is an integer number (29531250).

Almost surely, 2^1121214120 is an apocalyptic number.

1121214120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121214120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1890000000).

1121214120 is an abundant number, since it is smaller than the sum of its proper divisors (2658785880).

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

1121214120 is a wasteful number, since it uses less digits than its factorization.

1121214120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31299 (or 31295 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1121214120 is about 33484.5355350795. The cubic root of 1121214120 is about 1038.8739414581.

Adding to 1121214120 its reverse (214121211), we get a palindrome (1335335331).

The spelling of 1121214120 in words is "one billion, one hundred twenty-one million, two hundred fourteen thousand, one hundred twenty".