20002111111220 has 48 divisors (see below), whose sum is σ = 48005548808448. Its totient is φ = 6857797789440.

The previous prime is 20002111111219. The next prime is 20002111111223. The reversal of 20002111111220 is 2211111120002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20002111111195 and 20002111111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002111111223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14406089 + ... + 15733391.

It is an arithmetic number, because the mean of its divisors is an integer number (1000115600176).

Almost surely, 2^{20002111111220} is an apocalyptic number.

20002111111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002111111220 is an abundant number, since it is smaller than the sum of its proper divisors (28003437697228).

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

20002111111220 is a wasteful number, since it uses less digits than its factorization.

20002111111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434960 (or 1434958 counting only the distinct ones).

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

Adding to 20002111111220 its reverse (2211111120002), we get a palindrome (22213222231222).

The spelling of 20002111111220 in words is "twenty trillion, two billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty".