1122255890 has 16 divisors (see below), whose sum is σ = 2308640832. Its totient is φ = 384773424.

The previous prime is 1122255863. The next prime is 1122255941. The reversal of 1122255890 is 985522211.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1122255890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8016044 + ... + 8016183.

It is an arithmetic number, because the mean of its divisors is an integer number (144290052).

Almost surely, 2^1122255890 is an apocalyptic number.

1122255890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1122255890 is an abundant number, since it is smaller than the sum of its proper divisors (1186384942).

1122255890 is a wasteful number, since it uses less digits than its factorization.

1122255890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16032241.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 1122255890 is about 33500.0879103324. The cubic root of 1122255890 is about 1039.1955965477.

The spelling of 1122255890 in words is "one billion, one hundred twenty-two million, two hundred fifty-five thousand, eight hundred ninety".