212011220011 has 4 divisors (see below), whose sum is σ = 212651737624. Its totient is φ = 211370702400.

The previous prime is 212011219999. The next prime is 212011220017. The reversal of 212011220011 is 110022110212.

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 212011220011 - 2³⁵ = 177651481643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011219973 and 212011220000.

It is not an unprimeable number, because it can be changed into a prime (212011220017) 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, 320258310 + ... + 320258971.

It is an arithmetic number, because the mean of its divisors is an integer number (53162934406).

Almost surely, 2^212011220011 is an apocalyptic number.

212011220011 is a deficient number, since it is larger than the sum of its proper divisors (640517613).

212011220011 is an equidigital number, since it uses as much as digits as its factorization.

212011220011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640517612.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212011220011 its reverse (110022110212), we get a palindrome (322033330223).

The spelling of 212011220011 in words is "two hundred twelve billion, eleven million, two hundred twenty thousand, eleven".