1101212205 has 16 divisors (see below), whose sum is σ = 1784244480. Its totient is φ = 579878208.

The previous prime is 1101212173. The next prime is 1101212207. The reversal of 1101212205 is 5022121011.

It is not a de Polignac number, because 1101212205 - 2⁵ = 1101212173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101212207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463462 + ... + 465831.

It is an arithmetic number, because the mean of its divisors is an integer number (111515280).

Almost surely, 2^1101212205 is an apocalyptic number.

1101212205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1101212205 is a deficient number, since it is larger than the sum of its proper divisors (683032275).

1101212205 is an equidigital number, since it uses as much as digits as its factorization.

1101212205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929380.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1101212205 is about 33184.5175496044. The cubic root of 1101212205 is about 1032.6591687108.

Adding to 1101212205 its reverse (5022121011), we get a palindrome (6123333216).

The spelling of 1101212205 in words is "one billion, one hundred one million, two hundred twelve thousand, two hundred five".