212101002210111 has 24 divisors (see below), whose sum is σ = 328974473265840. Its totient is φ = 121200023653632.

The previous prime is 212101002210049. The next prime is 212101002210131. The reversal of 212101002210111 is 111012200101212.

It is a happy number.

It is not a de Polignac number, because 212101002210111 - 2⁹ = 212101002209599 is a prime.

It is a super-2 number, since 2×212101002210111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212101002210131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30473575 + ... + 36780983.

It is an arithmetic number, because the mean of its divisors is an integer number (13707269719410).

Almost surely, 2^{212101002210111} is an apocalyptic number.

212101002210111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212101002210111 is a deficient number, since it is larger than the sum of its proper divisors (116873471055729).

212101002210111 is a wasteful number, since it uses less digits than its factorization.

212101002210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536183 (or 6536176 counting only the distinct ones).

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

Adding to 212101002210111 its reverse (111012200101212), we get a palindrome (323113202311323).

The spelling of 212101002210111 in words is "two hundred twelve trillion, one hundred one billion, two million, two hundred ten thousand, one hundred eleven".