1155201000220 has 96 divisors (see below), whose sum is σ = 2513752496640. Its totient is φ = 445629354240.

The previous prime is 1155201000167. The next prime is 1155201000229. The reversal of 1155201000220 is 220001025511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155201000229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152820801 + ... + 152828359.

It is an arithmetic number, because the mean of its divisors is an integer number (26184921840).

Almost surely, 2^{1155201000220} is an apocalyptic number.

1155201000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155201000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1256876248320).

1155201000220 is an abundant number, since it is smaller than the sum of its proper divisors (1358551496420).

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

1155201000220 is a wasteful number, since it uses less digits than its factorization.

1155201000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9835 (or 9833 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 1155201000220 its reverse (220001025511), we get a palindrome (1375202025731).

The spelling of 1155201000220 in words is "one trillion, one hundred fifty-five billion, two hundred one million, two hundred twenty", and thus it is an aban number.