1105123216 has 40 divisors (see below), whose sum is σ = 2340278784. Its totient is φ = 503278080.

The previous prime is 1105123189. The next prime is 1105123219. The reversal of 1105123216 is 6123215011.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1105123219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57100 + ... + 73963.

Almost surely, 2^1105123216 is an apocalyptic number.

1105123216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1105123216 is an abundant number, since it is smaller than the sum of its proper divisors (1235155568).

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

1105123216 is a wasteful number, since it uses less digits than its factorization.

1105123216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131119 (or 131113 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 1105123216 is about 33243.3935692492. The cubic root of 1105123216 is about 1033.8802380912.

Adding to 1105123216 its reverse (6123215011), we get a palindrome (7228338227).

The spelling of 1105123216 in words is "one billion, one hundred five million, one hundred twenty-three thousand, two hundred sixteen".