1121285152 has 48 divisors (see below), whose sum is σ = 2502480960. Its totient is φ = 490275072.

The previous prime is 1121285129. The next prime is 1121285153. The reversal of 1121285152 is 2515821211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121285152.

It is not an unprimeable number, because it can be changed into a prime (1121285153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63028 + ... + 78835.

It is an arithmetic number, because the mean of its divisors is an integer number (52135020).

Almost surely, 2^1121285152 is an apocalyptic number.

It is an amenable number.

1121285152 is an abundant number, since it is smaller than the sum of its proper divisors (1381195808).

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

1121285152 is a wasteful number, since it uses less digits than its factorization.

1121285152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141905 (or 141897 counting only the distinct ones).

The product of its digits is 1600, while the sum is 28.

The square root of 1121285152 is about 33485.5961870175. The cubic root of 1121285152 is about 1038.8958795026.

The spelling of 1121285152 in words is "one billion, one hundred twenty-one million, two hundred eighty-five thousand, one hundred fifty-two".