1131011022220 has 48 divisors (see below), whose sum is σ = 2391311059200. Its totient is φ = 449322148800.

The previous prime is 1131011022203. The next prime is 1131011022221. The reversal of 1131011022220 is 222201101311.

It is a junction number, because it is equal to n+sod(n) for n = 1131011022194 and 1131011022203.

It is not an unprimeable number, because it can be changed into a prime (1131011022221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17057091 + ... + 17123269.

It is an arithmetic number, because the mean of its divisors is an integer number (49818980400).

Almost surely, 2^{1131011022220} is an apocalyptic number.

1131011022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131011022220 is an abundant number, since it is smaller than the sum of its proper divisors (1260300036980).

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

1131011022220 is a wasteful number, since it uses less digits than its factorization.

1131011022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71998 (or 71996 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1131011022220 its reverse (222201101311), we get a palindrome (1353212123531).

The spelling of 1131011022220 in words is "one trillion, one hundred thirty-one billion, eleven million, twenty-two thousand, two hundred twenty".