20111120020220 has 24 divisors (see below), whose sum is σ = 42382586513904. Its totient is φ = 8016022394496.

The previous prime is 20111120020219. The next prime is 20111120020249. The reversal of 20111120020220 is 2202002111102.

It is a junction number, because it is equal to n+sod(n) for n = 20111120020195 and 20111120020204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1776595049 + ... + 1776606368.

It is an arithmetic number, because the mean of its divisors is an integer number (1765941104746).

Almost surely, 2^{20111120020220} is an apocalyptic number.

20111120020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20111120020220 is an abundant number, since it is smaller than the sum of its proper divisors (22271466493684).

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

20111120020220 is a wasteful number, since it uses less digits than its factorization.

20111120020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553201709 (or 3553201707 counting only the distinct ones).

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

Adding to 20111120020220 its reverse (2202002111102), we get a palindrome (22313122131322).

The spelling of 20111120020220 in words is "twenty trillion, one hundred eleven billion, one hundred twenty million, twenty thousand, two hundred twenty".