212102210210111 has 16 divisors (see below), whose sum is σ = 233994936133728. Its totient is φ = 191006468198400.

The previous prime is 212102210210089. The next prime is 212102210210119. The reversal of 212102210210111 is 111012012201212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212102210210111 is a prime.

It is a super-2 number, since 2×212102210210111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212102210210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102210210119) 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, 15756191 + ... + 25931871.

It is an arithmetic number, because the mean of its divisors is an integer number (14624683508358).

Almost surely, 2^{212102210210111} is an apocalyptic number.

212102210210111 is a deficient number, since it is larger than the sum of its proper divisors (21892725923617).

212102210210111 is a wasteful number, since it uses less digits than its factorization.

212102210210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10214842.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212102210210111 its reverse (111012012201212), we get a palindrome (323114222411323).

The spelling of 212102210210111 in words is "two hundred twelve trillion, one hundred two billion, two hundred ten million, two hundred ten thousand, one hundred eleven".