11321210201220 has 36 divisors (see below), whose sum is σ = 34341004277580. Its totient is φ = 3018989386944.

The previous prime is 11321210201209. The next prime is 11321210201243. The reversal of 11321210201220 is 2210201212311.

11321210201220 is a `hidden beast` number, since 1 + 1 + 32 + 1 + 210 + 201 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8607968716356 + 2713241484864 = 2933934^2 + 1647192^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 11321210201193 and 11321210201202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31447805935 + ... + 31447806294.

Almost surely, 2^{11321210201220} is an apocalyptic number.

11321210201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321210201220 is an abundant number, since it is smaller than the sum of its proper divisors (23019794076360).

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

11321210201220 is a wasteful number, since it uses less digits than its factorization.

11321210201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62895612244 (or 62895612239 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 11321210201220 its reverse (2210201212311), we get a palindrome (13531411413531).

The spelling of 11321210201220 in words is "eleven trillion, three hundred twenty-one billion, two hundred ten million, two hundred one thousand, two hundred twenty".