210120020012011 has 4 divisors (see below), whose sum is σ = 210120415891624. Its totient is φ = 210119624132400.

The previous prime is 210120020012003. The next prime is 210120020012041. The reversal of 210120020012011 is 110210020021012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210120020012011 - 2³ = 210120020012003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210120020011982 and 210120020012000.

It is not an unprimeable number, because it can be changed into a prime (210120020012041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197142585 + ... + 198205546.

It is an arithmetic number, because the mean of its divisors is an integer number (52530103972906).

Almost surely, 2^{210120020012011} is an apocalyptic number.

210120020012011 is a deficient number, since it is larger than the sum of its proper divisors (395879613).

210120020012011 is an equidigital number, since it uses as much as digits as its factorization.

210120020012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395879612.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210120020012011 its reverse (110210020021012), we get a palindrome (320330040033023).

Subtracting from 210120020012011 its reverse (110210020021012), we obtain a palindrome (99909999990999).

The spelling of 210120020012011 in words is "two hundred ten trillion, one hundred twenty billion, twenty million, twelve thousand, eleven".