1220332300218 has 24 divisors (see below), whose sum is σ = 2799585865908. Its totient is φ = 382849348992.

The previous prime is 1220332300217. The next prime is 1220332300237. The reversal of 1220332300218 is 8120032330221.

It is a happy number.

1220332300218 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 332 + 300 + 21 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1202766243849 + 17566056369 = 1096707^2 + 132537^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220332300191 and 1220332300200.

It is not an unprimeable number, because it can be changed into a prime (1220332300217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1994006721 + ... + 1994007332.

Almost surely, 2^{1220332300218} is an apocalyptic number.

1220332300218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1220332300218 is an abundant number, since it is smaller than the sum of its proper divisors (1579253565690).

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

1220332300218 is a wasteful number, since it uses less digits than its factorization.

1220332300218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988014078 (or 3988014075 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 1220332300218 its reverse (8120032330221), we get a palindrome (9340364630439).

The spelling of 1220332300218 in words is "one trillion, two hundred twenty billion, three hundred thirty-two million, three hundred thousand, two hundred eighteen".