1220012533305 has 24 divisors (see below), whose sum is σ = 2117977225728. Its totient is φ = 649661402016.

The previous prime is 1220012533303. The next prime is 1220012533367. The reversal of 1220012533305 is 5033352100221.

It is a happy number.

1220012533305 is a `hidden beast` number, since 1 + 2 + 200 + 125 + 3 + 330 + 5 = 666.

It is not a de Polignac number, because 1220012533305 - 2¹ = 1220012533303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220012533303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21053017 + ... + 21110886.

It is an arithmetic number, because the mean of its divisors is an integer number (88249051072).

Almost surely, 2^{1220012533305} is an apocalyptic number.

1220012533305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220012533305 is a deficient number, since it is larger than the sum of its proper divisors (897964692423).

1220012533305 is a wasteful number, since it uses less digits than its factorization.

1220012533305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42164557 (or 42164554 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 1220012533305 its reverse (5033352100221), we get a palindrome (6253364633526).

The spelling of 1220012533305 in words is "one trillion, two hundred twenty billion, twelve million, five hundred thirty-three thousand, three hundred five".