1121400663 has 8 divisors (see below), whose sum is σ = 1496800368. Its totient is φ = 746800704.

The previous prime is 1121400649. The next prime is 1121400713. The reversal of 1121400663 is 3660041211.

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

It is not a de Polignac number, because 1121400663 - 2⁴ = 1121400647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121400613) 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, 196656 + ... + 202277.

It is an arithmetic number, because the mean of its divisors is an integer number (187100046).

Almost surely, 2^1121400663 is an apocalyptic number.

1121400663 is a deficient number, since it is larger than the sum of its proper divisors (375399705).

1121400663 is an equidigital number, since it uses as much as digits as its factorization.

1121400663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399873.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1121400663 is about 33487.3209289725. The cubic root of 1121400663 is about 1038.9315527897.

Adding to 1121400663 its reverse (3660041211), we get a palindrome (4781441874).

The spelling of 1121400663 in words is "one billion, one hundred twenty-one million, four hundred thousand, six hundred sixty-three".