1102121205 has 32 divisors (see below), whose sum is σ = 1822504320. Its totient is φ = 568350720.

The previous prime is 1102121173. The next prime is 1102121243. The reversal of 1102121205 is 5021212011.

It is not a de Polignac number, because 1102121205 - 2⁵ = 1102121173 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 an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 61566 + ... + 77424.

It is an arithmetic number, because the mean of its divisors is an integer number (56953260).

Almost surely, 2^1102121205 is an apocalyptic number.

1102121205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1102121205 is a deficient number, since it is larger than the sum of its proper divisors (720383115).

1102121205 is a wasteful number, since it uses less digits than its factorization.

1102121205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16021.

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

The square root of 1102121205 is about 33198.2108704671. The cubic root of 1102121205 is about 1032.9432281069.

Adding to 1102121205 its reverse (5021212011), we get a palindrome (6123333216).

The spelling of 1102121205 in words is "one billion, one hundred two million, one hundred twenty-one thousand, two hundred five".