1121520412 has 6 divisors (see below), whose sum is σ = 1962660728. Its totient is φ = 560760204.

The previous prime is 1121520377. The next prime is 1121520487. The reversal of 1121520412 is 2140251211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121520412.

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 as a sum of consecutive naturals, namely, 140190048 + ... + 140190055.

Almost surely, 2^1121520412 is an apocalyptic number.

It is an amenable number.

1121520412 is a deficient number, since it is larger than the sum of its proper divisors (841140316).

1121520412 is a wasteful number, since it uses less digits than its factorization.

1121520412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280380107 (or 280380105 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1121520412 is about 33489.1088564626. The cubic root of 1121520412 is about 1038.9685323131.

Adding to 1121520412 its reverse (2140251211), we get a palindrome (3261771623).

The spelling of 1121520412 in words is "one billion, one hundred twenty-one million, five hundred twenty thousand, four hundred twelve".