1220234205 has 16 divisors (see below), whose sum is σ = 1955176704. Its totient is φ = 649857600.

The previous prime is 1220234173. The next prime is 1220234209. The reversal of 1220234205 is 5024320221.

It is not a de Polignac number, because 1220234205 - 2⁵ = 1220234173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220234209) 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, 47509 + ... + 68538.

It is an arithmetic number, because the mean of its divisors is an integer number (122198544).

Almost surely, 2^1220234205 is an apocalyptic number.

1220234205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220234205 is a deficient number, since it is larger than the sum of its proper divisors (734942499).

1220234205 is a wasteful number, since it uses less digits than its factorization.

1220234205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116756.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1220234205 is about 34931.8508670812. The cubic root of 1220234205 is about 1068.5981014585.

Adding to 1220234205 its reverse (5024320221), we get a palindrome (6244554426).

The spelling of 1220234205 in words is "one billion, two hundred twenty million, two hundred thirty-four thousand, two hundred five".