210111200121020 has 96 divisors (see below), whose sum is σ = 512906353122240. Its totient is φ = 71451691683840.

The previous prime is 210111200121001. The next prime is 210111200121113. The reversal of 210111200121020 is 20121002111012.

210111200121020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 210111200120986 and 210111200121004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178328315 + ... + 179502674.

It is an arithmetic number, because the mean of its divisors is an integer number (5342774511690).

Almost surely, 2^{210111200121020} is an apocalyptic number.

210111200121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210111200121020 is an abundant number, since it is smaller than the sum of its proper divisors (302795153001220).

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

210111200121020 is a wasteful number, since it uses less digits than its factorization.

210111200121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357831183 (or 357831181 counting only the distinct ones).

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

Adding to 210111200121020 its reverse (20121002111012), we get a palindrome (230232202232032).

The spelling of 210111200121020 in words is "two hundred ten trillion, one hundred eleven billion, two hundred million, one hundred twenty-one thousand, twenty".