1121129668 has 12 divisors (see below), whose sum is σ = 2077387452. Its totient is φ = 527590400.

The previous prime is 1121129657. The next prime is 1121129671. The reversal of 1121129668 is 8669211211.

It can be written as a sum of positive squares in 2 ways, for example, as 626601024 + 494528644 = 25032^2 + 22238^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8243533 + ... + 8243668.

It is an arithmetic number, because the mean of its divisors is an integer number (173115621).

Almost surely, 2^1121129668 is an apocalyptic number.

It is an amenable number.

1121129668 is a deficient number, since it is larger than the sum of its proper divisors (956257784).

1121129668 is a wasteful number, since it uses less digits than its factorization.

1121129668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16487222 (or 16487220 counting only the distinct ones).

The product of its digits is 10368, while the sum is 37.

The square root of 1121129668 is about 33483.2744515825. The cubic root of 1121129668 is about 1038.8478574767.

The spelling of 1121129668 in words is "one billion, one hundred twenty-one million, one hundred twenty-nine thousand, six hundred sixty-eight".