212211111221101 has 16 divisors (see below), whose sum is σ = 212856787873728. Its totient is φ = 211566634963200.

The previous prime is 212211111221033. The next prime is 212211111221149. The reversal of 212211111221101 is 101122111112212.

It is a cyclic number.

It is not a de Polignac number, because 212211111221101 - 2²⁹ = 212210574350189 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 (212211111221401) 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, 1298616066 + ... + 1298779468.

It is an arithmetic number, because the mean of its divisors is an integer number (13303549242108).

Almost surely, 2^{212211111221101} is an apocalyptic number.

It is an amenable number.

212211111221101 is a deficient number, since it is larger than the sum of its proper divisors (645676652627).

212211111221101 is a wasteful number, since it uses less digits than its factorization.

212211111221101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167052.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 212211111221101 its reverse (101122111112212), we get a palindrome (313333222333313).

The spelling of 212211111221101 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty-one thousand, one hundred one".