210202112011 has 4 divisors (see below), whose sum is σ = 210479790592. Its totient is φ = 209924433432.

The previous prime is 210202111963. The next prime is 210202112033. The reversal of 210202112011 is 110211202012.

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 210202112011 - 2¹³ = 210202103819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210202111982 and 210202112000.

It is not an unprimeable number, because it can be changed into a prime (210202112041) 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, 138838155 + ... + 138839668.

It is an arithmetic number, because the mean of its divisors is an integer number (52619947648).

Almost surely, 2^210202112011 is an apocalyptic number.

210202112011 is a deficient number, since it is larger than the sum of its proper divisors (277678581).

210202112011 is an equidigital number, since it uses as much as digits as its factorization.

210202112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277678580.

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

Adding to 210202112011 its reverse (110211202012), we get a palindrome (320413314023).

Subtracting from 210202112011 its reverse (110211202012), we obtain a palindrome (99990909999).

The spelling of 210202112011 in words is "two hundred ten billion, two hundred two million, one hundred twelve thousand, eleven".