1131100220220 has 24 divisors (see below), whose sum is σ = 3167080616784. Its totient is φ = 301626725376.

The previous prime is 1131100220191. The next prime is 1131100220233. The reversal of 1131100220220 is 220220011311.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1131100220220.

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, 9425835109 + ... + 9425835228.

It is an arithmetic number, because the mean of its divisors is an integer number (131961692366).

Almost surely, 2^{1131100220220} is an apocalyptic number.

1131100220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131100220220 is an abundant number, since it is smaller than the sum of its proper divisors (2035980396564).

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

1131100220220 is a wasteful number, since it uses less digits than its factorization.

1131100220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18851670349 (or 18851670347 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1131100220220 its reverse (220220011311), we get a palindrome (1351320231531).

The spelling of 1131100220220 in words is "one trillion, one hundred thirty-one billion, one hundred million, two hundred twenty thousand, two hundred twenty".