1121429228 has 12 divisors (see below), whose sum is σ = 1964185272. Its totient is φ = 560233440.

The previous prime is 1121429227. The next prime is 1121429251. The reversal of 1121429228 is 8229241211.

It is a junction number, because it is equal to n+sod(n) for n = 1121429194 and 1121429203.

It is not an unprimeable number, because it can be changed into a prime (1121429227) by changing a digit.

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, 115025 + ... + 124392.

It is an arithmetic number, because the mean of its divisors is an integer number (163682106).

Almost surely, 2^1121429228 is an apocalyptic number.

It is an amenable number.

1121429228 is a deficient number, since it is larger than the sum of its proper divisors (842756044).

1121429228 is a wasteful number, since it uses less digits than its factorization.

1121429228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240592 (or 240590 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 1121429228 is about 33487.7474309635. The cubic root of 1121429228 is about 1038.9403741470.

The spelling of 1121429228 in words is "one billion, one hundred twenty-one million, four hundred twenty-nine thousand, two hundred twenty-eight".