1220205052 has 24 divisors (see below), whose sum is σ = 2342511360. Its totient is φ = 551536560.

The previous prime is 1220205047. The next prime is 1220205083. The reversal of 1220205052 is 2505020221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69588 + ... + 85339.

It is an arithmetic number, because the mean of its divisors is an integer number (97604640).

Almost surely, 2^1220205052 is an apocalyptic number.

It is an amenable number.

1220205052 is a deficient number, since it is larger than the sum of its proper divisors (1122306308).

1220205052 is a wasteful number, since it uses less digits than its factorization.

1220205052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155121 (or 155119 counting only the distinct ones).

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

The square root of 1220205052 is about 34931.4335806591. The cubic root of 1220205052 is about 1068.5895913194.

Adding to 1220205052 its reverse (2505020221), we get a palindrome (3725225273).

The spelling of 1220205052 in words is "one billion, two hundred twenty million, two hundred five thousand, fifty-two".