212021111102011 has 4 divisors (see below), whose sum is σ = 212025119949000. Its totient is φ = 212017102255024.

The previous prime is 212021111101993. The next prime is 212021111102029. The reversal of 212021111102011 is 110201111120212.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (212021111101993) and next prime (212021111102029).

It is a cyclic number.

It is not a de Polignac number, because 212021111102011 - 2¹³ = 212021111093819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212021111102081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004344161 + ... + 2004449938.

It is an arithmetic number, because the mean of its divisors is an integer number (53006279987250).

Almost surely, 2^{212021111102011} is an apocalyptic number.

212021111102011 is a deficient number, since it is larger than the sum of its proper divisors (4008846989).

212021111102011 is an equidigital number, since it uses as much as digits as its factorization.

212021111102011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008846988.

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

Adding to 212021111102011 its reverse (110201111120212), we get a palindrome (322222222222223).

The spelling of 212021111102011 in words is "two hundred twelve trillion, twenty-one billion, one hundred eleven million, one hundred two thousand, eleven".