1131202013220 has 384 divisors, whose sum is σ = 3602539584000. Its totient is φ = 294627041280.

The previous prime is 1131202013219. The next prime is 1131202013231. The reversal of 1131202013220 is 223102021311.

1131202013220 is a `hidden beast` number, since 11 + 312 + 0 + 20 + 1 + 322 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1131202013193 and 1131202013202.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2090946150 + ... + 2090946690.

It is an arithmetic number, because the mean of its divisors is an integer number (9381613500).

Almost surely, 2^{1131202013220} is an apocalyptic number.

1131202013220 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 1131202013220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1801269792000).

1131202013220 is an abundant number, since it is smaller than the sum of its proper divisors (2471337570780).

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

1131202013220 is a wasteful number, since it uses less digits than its factorization.

1131202013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1131202013220 its reverse (223102021311), we get a palindrome (1354304034531).

The spelling of 1131202013220 in words is "one trillion, one hundred thirty-one billion, two hundred two million, thirteen thousand, two hundred twenty".