1121577151820 has 12 divisors (see below), whose sum is σ = 2355312018864. Its totient is φ = 448630860720.

The previous prime is 1121577151817. The next prime is 1121577151837. The reversal of 1121577151820 is 281517751211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28039428776 + ... + 28039428815.

It is an arithmetic number, because the mean of its divisors is an integer number (196276001572).

Almost surely, 2^{1121577151820} is an apocalyptic number.

1121577151820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121577151820 is an abundant number, since it is smaller than the sum of its proper divisors (1233734867044).

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

1121577151820 is a wasteful number, since it uses less digits than its factorization.

1121577151820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56078857600 (or 56078857598 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 41.

The spelling of 1121577151820 in words is "one trillion, one hundred twenty-one billion, five hundred seventy-seven million, one hundred fifty-one thousand, eight hundred twenty".