1205502220 has 48 divisors (see below), whose sum is σ = 2844838080. Its totient is φ = 425753856.

The previous prime is 1205502211. The next prime is 1205502223. The reversal of 1205502220 is 222055021.

It is not an unprimeable number, because it can be changed into a prime (1205502223) 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, 94815 + ... + 106774.

It is an arithmetic number, because the mean of its divisors is an integer number (59267460).

Almost surely, 2^1205502220 is an apocalyptic number.

1205502220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205502220 is an abundant number, since it is smaller than the sum of its proper divisors (1639335860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205502220 is a wasteful number, since it uses less digits than its factorization.

1205502220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201634 (or 201632 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1205502220 is about 34720.3430282594. The cubic root of 1205502220 is about 1064.2802545809.

Adding to 1205502220 its reverse (222055021), we get a palindrome (1427557241).

The spelling of 1205502220 in words is "one billion, two hundred five million, five hundred two thousand, two hundred twenty".