212210002100111 has 4 divisors (see below), whose sum is σ = 212435517512424. Its totient is φ = 211984486687800.

The previous prime is 212210002100101. The next prime is 212210002100191. The reversal of 212210002100111 is 111001200012212.

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 212210002100111 - 2¹⁰ = 212210002099087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210002100101) 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, 112757704745 + ... + 112757706626.

It is an arithmetic number, because the mean of its divisors is an integer number (53108879378106).

Almost surely, 2^{212210002100111} is an apocalyptic number.

212210002100111 is a deficient number, since it is larger than the sum of its proper divisors (225515412313).

212210002100111 is an equidigital number, since it uses as much as digits as its factorization.

212210002100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225515412312.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212210002100111 its reverse (111001200012212), we get a palindrome (323211202112323).

The spelling of 212210002100111 in words is "two hundred twelve trillion, two hundred ten billion, two million, one hundred thousand, one hundred eleven".