20011200211020 has 24 divisors (see below), whose sum is σ = 56031360591024. Its totient is φ = 5336320056256.

The previous prime is 20011200211019. The next prime is 20011200211021. The reversal of 20011200211020 is 2011200211002.

It is an interprime number because it is at equal distance from previous prime (20011200211019) and next prime (20011200211021).

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 = 20011200210987 and 20011200211005.

It is not an unprimeable number, because it can be changed into a prime (20011200211021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166760001699 + ... + 166760001818.

It is an arithmetic number, because the mean of its divisors is an integer number (2334640024626).

Almost surely, 2^{20011200211020} is an apocalyptic number.

20011200211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011200211020 is an abundant number, since it is smaller than the sum of its proper divisors (36020160380004).

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

20011200211020 is a wasteful number, since it uses less digits than its factorization.

20011200211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333520003529 (or 333520003527 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20011200211020 its reverse (2011200211002), we get a palindrome (22022400422022).

The spelling of 20011200211020 in words is "twenty trillion, eleven billion, two hundred million, two hundred eleven thousand, twenty".