1123221098 has 24 divisors (see below), whose sum is σ = 1771154112. Its totient is φ = 534097872.

The previous prime is 1123221097. The next prime is 1123221133. The reversal of 1123221098 is 8901223211.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 1123221098.

It is not an unprimeable number, because it can be changed into a prime (1123221091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107711 + ... + 117677.

It is an arithmetic number, because the mean of its divisors is an integer number (73798088).

Almost surely, 2^1123221098 is an apocalyptic number.

1123221098 is a deficient number, since it is larger than the sum of its proper divisors (647933014).

1123221098 is an equidigital number, since it uses as much as digits as its factorization.

1123221098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10094 (or 10065 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 1123221098 is about 33514.4908658926. The cubic root of 1123221098 is about 1039.4934348842.

The spelling of 1123221098 in words is "one billion, one hundred twenty-three million, two hundred twenty-one thousand, ninety-eight".