11001201121220 has 48 divisors (see below), whose sum is σ = 23992623133248. Its totient is φ = 4233992273280.

The previous prime is 11001201121201. The next prime is 11001201121231. The reversal of 11001201121220 is 2212110210011.

It is a super-2 number, since 2×11001201121220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11001201121195 and 11001201121204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95405771 + ... + 95521010.

It is an arithmetic number, because the mean of its divisors is an integer number (499846315276).

Almost surely, 2^{11001201121220} is an apocalyptic number.

11001201121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001201121220 is an abundant number, since it is smaller than the sum of its proper divisors (12991422012028).

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

11001201121220 is a wasteful number, since it uses less digits than its factorization.

11001201121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190926900 (or 190926898 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11001201121220 its reverse (2212110210011), we get a palindrome (13213311331231).

The spelling of 11001201121220 in words is "eleven trillion, one billion, two hundred one million, one hundred twenty-one thousand, two hundred twenty".