1121320002 has 32 divisors (see below), whose sum is σ = 2512643904. Its totient is φ = 330609600.

The previous prime is 1121319971. The next prime is 1121320007. The reversal of 1121320002 is 2000231211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121320002.

It is not an unprimeable number, because it can be changed into a prime (1121320007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227149 + ... + 232032.

It is an arithmetic number, because the mean of its divisors is an integer number (78520122).

Almost surely, 2^1121320002 is an apocalyptic number.

1121320002 is an abundant number, since it is smaller than the sum of its proper divisors (1391323902).

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

1121320002 is a wasteful number, since it uses less digits than its factorization.

1121320002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459234.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1121320002 is about 33486.1165559699. The cubic root of 1121320002 is about 1038.9066424937.

Adding to 1121320002 its reverse (2000231211), we get a palindrome (3121551213).

It can be divided in two parts, 1121 and 320002, that added together give a palindrome (321123).

The spelling of 1121320002 in words is "one billion, one hundred twenty-one million, three hundred twenty thousand, two".