1220205053 has 4 divisors (see below), whose sum is σ = 1232051808. Its totient is φ = 1208358300.

The previous prime is 1220205047. The next prime is 1220205083. The reversal of 1220205053 is 3505020221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220205053 - 2⁶ = 1220204989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220205013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5923223 + ... + 5923428.

It is an arithmetic number, because the mean of its divisors is an integer number (308012952).

Almost surely, 2^1220205053 is an apocalyptic number.

It is an amenable number.

1220205053 is a deficient number, since it is larger than the sum of its proper divisors (11846755).

1220205053 is a wasteful number, since it uses less digits than its factorization.

1220205053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11846754.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 1220205053 is about 34931.4335949729. The cubic root of 1220205053 is about 1068.5895916113.

Adding to 1220205053 its reverse (3505020221), we get a palindrome (4725225274).

The spelling of 1220205053 in words is "one billion, two hundred twenty million, two hundred five thousand, fifty-three".