1123201090 has 32 divisors (see below), whose sum is σ = 2301457536. Its totient is φ = 390677760.

The previous prime is 1123201063. The next prime is 1123201097. The reversal of 1123201090 is 901023211.

It is not an unprimeable number, because it can be changed into a prime (1123201097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219447 + ... + 224506.

It is an arithmetic number, because the mean of its divisors is an integer number (71920548).

Almost surely, 2^1123201090 is an apocalyptic number.

1123201090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123201090 is an abundant number, since it is smaller than the sum of its proper divisors (1178256446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123201090 is a wasteful number, since it uses less digits than its factorization.

1123201090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443994.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1123201090 is about 33514.1923668168. The cubic root of 1123201090 is about 1039.4872626628.

The spelling of 1123201090 in words is "one billion, one hundred twenty-three million, two hundred one thousand, ninety".