212122101101011 has 4 divisors (see below), whose sum is σ = 212161086973224. Its totient is φ = 212083115228800.

The previous prime is 212122101100979. The next prime is 212122101101021. The reversal of 212122101101011 is 110101101221212.

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 212122101101011 - 2⁵ = 212122101100979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122101101021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19492927945 + ... + 19492938826.

It is an arithmetic number, because the mean of its divisors is an integer number (53040271743306).

Almost surely, 2^{212122101101011} is an apocalyptic number.

212122101101011 is a deficient number, since it is larger than the sum of its proper divisors (38985872213).

212122101101011 is an equidigital number, since it uses as much as digits as its factorization.

212122101101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38985872212.

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

Adding to 212122101101011 its reverse (110101101221212), we get a palindrome (322223202322223).

The spelling of 212122101101011 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred one million, one hundred one thousand, eleven".