210111202102011 has 16 divisors (see below), whose sum is σ = 321061287744000. Its totient is φ = 119729105212608.

The previous prime is 210111202101973. The next prime is 210111202102037. The reversal of 210111202102011 is 110201202111012.

It is a happy number.

It is not a de Polignac number, because 210111202102011 - 2⁹ = 210111202101499 is a prime.

It is a super-2 number, since 2×210111202102011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210111202002011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13934944186 + ... + 13934959263.

It is an arithmetic number, because the mean of its divisors is an integer number (20066330484000).

Almost surely, 2^{210111202102011} is an apocalyptic number.

210111202102011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

210111202102011 is a deficient number, since it is larger than the sum of its proper divisors (110950085641989).

210111202102011 is a wasteful number, since it uses less digits than its factorization.

210111202102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27869903818.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210111202102011 its reverse (110201202111012), we get a palindrome (320312404213023).

Subtracting from 210111202102011 its reverse (110201202111012), we obtain a palindrome (99909999990999).

The spelling of 210111202102011 in words is "two hundred ten trillion, one hundred eleven billion, two hundred two million, one hundred two thousand, eleven".