20111101122020 has 12 divisors (see below), whose sum is σ = 42233312356284. Its totient is φ = 8044440448800.

The previous prime is 20111101122019. The next prime is 20111101122043. The reversal of 20111101122020 is 2022110111102.

It can be written as a sum of positive squares in 2 ways, for example, as 4453695302884 + 15657405819136 = 2110378^2 + 3956944^2 .

It is a super-2 number, since 2×20111101122020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111101121986 and 20111101122004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502777528031 + ... + 502777528070.

It is an arithmetic number, because the mean of its divisors is an integer number (3519442696357).

Almost surely, 2^{20111101122020} is an apocalyptic number.

20111101122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111101122020 is an abundant number, since it is smaller than the sum of its proper divisors (22122211234264).

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

20111101122020 is a wasteful number, since it uses less digits than its factorization.

20111101122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005555056110 (or 1005555056108 counting only the distinct ones).

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

Adding to 20111101122020 its reverse (2022110111102), we get a palindrome (22133211233122).

The spelling of 20111101122020 in words is "twenty trillion, one hundred eleven billion, one hundred one million, one hundred twenty-two thousand, twenty".