20111011212020 has 48 divisors (see below), whose sum is σ = 42315712080768. Its totient is φ = 8028680238720.

The previous prime is 20111011212013. The next prime is 20111011212041. The reversal of 20111011212020 is 2021211011102.

It is a junction number, because it is equal to n+sod(n) for n = 20111011211986 and 20111011212004.

It is a congruent number.

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, 46899185 + ... + 47326055.

It is an arithmetic number, because the mean of its divisors is an integer number (881577335016).

Almost surely, 2^{20111011212020} is an apocalyptic number.

20111011212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111011212020 is an abundant number, since it is smaller than the sum of its proper divisors (22204700868748).

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

20111011212020 is a wasteful number, since it uses less digits than its factorization.

20111011212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431480 (or 431478 counting only the distinct ones).

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

Adding to 20111011212020 its reverse (2021211011102), we get a palindrome (22132222223122).

The spelling of 20111011212020 in words is "twenty trillion, one hundred eleven billion, eleven million, two hundred twelve thousand, twenty".