20011110211020 has 48 divisors (see below), whose sum is σ = 59327056158048. Its totient is φ = 5022396288000.

The previous prime is 20011110210941. The next prime is 20011110211033. The reversal of 20011110211020 is 2011201111002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20011110210987 and 20011110211005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9809366731 + ... + 9809368770.

It is an arithmetic number, because the mean of its divisors is an integer number (1235980336626).

Almost surely, 2^{20011110211020} is an apocalyptic number.

20011110211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011110211020 is an abundant number, since it is smaller than the sum of its proper divisors (39315945947028).

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

20011110211020 is a wasteful number, since it uses less digits than its factorization.

20011110211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19618735530 (or 19618735528 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20011110211020 its reverse (2011201111002), we get a palindrome (22022311322022).

The spelling of 20011110211020 in words is "twenty trillion, eleven billion, one hundred ten million, two hundred eleven thousand, twenty".