11201201121020 has 24 divisors (see below), whose sum is σ = 24281313399168. Its totient is φ = 4335948820800.

The previous prime is 11201201121001. The next prime is 11201201121023. The reversal of 11201201121020 is 2012110210211.

It is a junction number, because it is equal to n+sod(n) for n = 11201201120986 and 11201201121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201201121023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9033226091 + ... + 9033227330.

It is an arithmetic number, because the mean of its divisors is an integer number (1011721391632).

Almost surely, 2^{11201201121020} is an apocalyptic number.

11201201121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11201201121020 is an abundant number, since it is smaller than the sum of its proper divisors (13080112278148).

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

11201201121020 is a wasteful number, since it uses less digits than its factorization.

11201201121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18066453461 (or 18066453459 counting only the distinct ones).

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

Adding to 11201201121020 its reverse (2012110210211), we get a palindrome (13213311331231).

The spelling of 11201201121020 in words is "eleven trillion, two hundred one billion, two hundred one million, one hundred twenty-one thousand, twenty".