212100101011 has 4 divisors (see below), whose sum is σ = 212103015552. Its totient is φ = 212097186472.

The previous prime is 212100100999. The next prime is 212100101119. The reversal of 212100101011 is 110101001212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212100101011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100171011) 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, 1345240 + ... + 1494613.

It is an arithmetic number, because the mean of its divisors is an integer number (53025753888).

Almost surely, 2^212100101011 is an apocalyptic number.

212100101011 is a deficient number, since it is larger than the sum of its proper divisors (2914541).

212100101011 is an equidigital number, since it uses as much as digits as its factorization.

212100101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914540.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 212100101011 its reverse (110101001212), we get a palindrome (322201102223).

The spelling of 212100101011 in words is "two hundred twelve billion, one hundred million, one hundred one thousand, eleven".