1228500105 has 16 divisors (see below), whose sum is σ = 2246400384. Its totient is φ = 561600000.

The previous prime is 1228500061. The next prime is 1228500109. The reversal of 1228500105 is 5010058221.

It is not a de Polignac number, because 1228500105 - 2⁷ = 1228499977 is a prime.

It is a super-2 number, since 2×1228500105² = 3018425015970022050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1228500109) 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, 5849896 + ... + 5850105.

It is an arithmetic number, because the mean of its divisors is an integer number (140400024).

Almost surely, 2^1228500105 is an apocalyptic number.

1228500105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1228500105 is a deficient number, since it is larger than the sum of its proper divisors (1017900279).

1228500105 is a wasteful number, since it uses less digits than its factorization.

1228500105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11700016.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 1228500105 is about 35049.9658345055. The cubic root of 1228500105 is about 1071.0055778012.

Adding to 1228500105 its reverse (5010058221), we get a palindrome (6238558326).

The spelling of 1228500105 in words is "one billion, two hundred twenty-eight million, five hundred thousand, one hundred five".