1220005052 has 24 divisors (see below), whose sum is σ = 2443840896. Its totient is φ = 522038448.

The previous prime is 1220005049. The next prime is 1220005091. The reversal of 1220005052 is 2505000221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220005052.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15878 + ... + 51885.

It is an arithmetic number, because the mean of its divisors is an integer number (101826704).

Almost surely, 2^1220005052 is an apocalyptic number.

It is an amenable number.

1220005052 is an abundant number, since it is smaller than the sum of its proper divisors (1223835844).

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

1220005052 is a wasteful number, since it uses less digits than its factorization.

1220005052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68417 (or 68415 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 1220005052 is about 34928.5707122407. The cubic root of 1220005052 is about 1068.5312050682.

Adding to 1220005052 its reverse (2505000221), we get a palindrome (3725005273).

The spelling of 1220005052 in words is "one billion, two hundred twenty million, five thousand, fifty-two".