210100012210020 has 96 divisors (see below), whose sum is σ = 592646689353600. Its totient is φ = 55610898269184.

The previous prime is 210100012210009. The next prime is 210100012210027. The reversal of 210100012210020 is 20012210001012.

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 = 210100012209978 and 210100012210005.

It is not an unprimeable number, because it can be changed into a prime (210100012210027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65668866 + ... + 68793894.

It is an arithmetic number, because the mean of its divisors is an integer number (6173403014100).

Almost surely, 2^{210100012210020} is an apocalyptic number.

210100012210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210100012210020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296323344676800).

210100012210020 is an abundant number, since it is smaller than the sum of its proper divisors (382546677143580).

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

210100012210020 is a wasteful number, since it uses less digits than its factorization.

210100012210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133357 (or 3133355 counting only the distinct ones).

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

Adding to 210100012210020 its reverse (20012210001012), we get a palindrome (230112222211032).

The spelling of 210100012210020 in words is "two hundred ten trillion, one hundred billion, twelve million, two hundred ten thousand, twenty".