11122020001220 has 96 divisors (see below), whose sum is σ = 25179668035200. Its totient is φ = 4111174047744.

The previous prime is 11122020001177. The next prime is 11122020001223. The reversal of 11122020001220 is 2210002022111.

It is a junction number, because it is equal to n+sod(n) for n = 11122020001195 and 11122020001204.

It is not an unprimeable number, because it can be changed into a prime (11122020001223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16295339 + ... + 16964141.

It is an arithmetic number, because the mean of its divisors is an integer number (262288208700).

Almost surely, 2^{11122020001220} is an apocalyptic number.

11122020001220 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 11122020001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12589834017600).

11122020001220 is an abundant number, since it is smaller than the sum of its proper divisors (14057648033980).

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

11122020001220 is a wasteful number, since it uses less digits than its factorization.

11122020001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669717 (or 669715 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11122020001220 its reverse (2210002022111), we get a palindrome (13332022023331).

The spelling of 11122020001220 in words is "eleven trillion, one hundred twenty-two billion, twenty million, one thousand, two hundred twenty".