210201110000020 has 24 divisors (see below), whose sum is σ = 443663053500744. Its totient is φ = 83653639714176.

The previous prime is 210201110000009. The next prime is 210201110000027. The reversal of 210201110000020 is 20000011102012.

It can be written as a sum of positive squares in 4 ways, for example, as 31199776376976 + 179001333623044 = 5585676^2 + 13379138^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 210201109999961 and 210201110000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201110000027) 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, 26675263827 + ... + 26675271706.

It is an arithmetic number, because the mean of its divisors is an integer number (18485960562531).

Almost surely, 2^{210201110000020} is an apocalyptic number.

210201110000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210201110000020 is an abundant number, since it is smaller than the sum of its proper divisors (233461943500724).

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

210201110000020 is a wasteful number, since it uses less digits than its factorization.

210201110000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53350535739 (or 53350535737 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210201110000020 its reverse (20000011102012), we get a palindrome (230201121102032).

The spelling of 210201110000020 in words is "two hundred ten trillion, two hundred one billion, one hundred ten million, twenty", and thus it is an aban number.