210102010111111 has 4 divisors (see below), whose sum is σ = 210345465511872. Its totient is φ = 209858554710352.

The previous prime is 210102010111057. The next prime is 210102010111139. The reversal of 210102010111111 is 111111010201012.

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

It is not a de Polignac number, because 210102010111111 - 2²⁹ = 210101473240199 is a prime.

It is a super-3 number, since 3×210102010111111³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210102010111091 and 210102010111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102010111181) 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, 121727699086 + ... + 121727700811.

It is an arithmetic number, because the mean of its divisors is an integer number (52586366377968).

Almost surely, 2^{210102010111111} is an apocalyptic number.

210102010111111 is a deficient number, since it is larger than the sum of its proper divisors (243455400761).

210102010111111 is an equidigital number, since it uses as much as digits as its factorization.

210102010111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243455400760.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 210102010111111 its reverse (111111010201012), we get a palindrome (321213020312123).

The spelling of 210102010111111 in words is "two hundred ten trillion, one hundred two billion, ten million, one hundred eleven thousand, one hundred eleven".