211011212011 has 4 divisors (see below), whose sum is σ = 212947094800. Its totient is φ = 209075329224.

The previous prime is 211011211991. The next prime is 211011212033. The reversal of 211011212011 is 110212110112.

It is a happy number.

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 211011212011 - 2¹⁵ = 211011179243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211011211982 and 211011212000.

It is not an unprimeable number, because it can be changed into a prime (211011212311) 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, 967941231 + ... + 967941448.

It is an arithmetic number, because the mean of its divisors is an integer number (53236773700).

Almost surely, 2^211011212011 is an apocalyptic number.

211011212011 is a deficient number, since it is larger than the sum of its proper divisors (1935882789).

211011212011 is a wasteful number, since it uses less digits than its factorization.

211011212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935882788.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 211011212011 its reverse (110212110112), we get a palindrome (321223322123).

The spelling of 211011212011 in words is "two hundred eleven billion, eleven million, two hundred twelve thousand, eleven".