1121287566827 has 8 divisors (see below), whose sum is σ = 1127333627520. Its totient is φ = 1115243942400.

The previous prime is 1121287566821. The next prime is 1121287566859. The reversal of 1121287566827 is 7286657821211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121287566827 - 2³² = 1116992599531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121287566821) 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, 317702 + ... + 1530852.

It is an arithmetic number, because the mean of its divisors is an integer number (140916703440).

Almost surely, 2^{1121287566827} is an apocalyptic number.

1121287566827 is a deficient number, since it is larger than the sum of its proper divisors (6046060693).

1121287566827 is a wasteful number, since it uses less digits than its factorization.

1121287566827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218133.

The product of its digits is 4515840, while the sum is 56.

The spelling of 1121287566827 in words is "one trillion, one hundred twenty-one billion, two hundred eighty-seven million, five hundred sixty-six thousand, eight hundred twenty-seven".