211201020011 has 4 divisors (see below), whose sum is σ = 211202680224. Its totient is φ = 211199359800.

The previous prime is 211201019971. The next prime is 211201020013. The reversal of 211201020011 is 110020102112.

211201020011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211201020011 - 2¹⁴ = 211201003627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211201019974 and 211201020001.

It is not an unprimeable number, because it can be changed into a prime (211201020013) 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, 621875 + ... + 899516.

It is an arithmetic number, because the mean of its divisors is an integer number (52800670056).

Almost surely, 2^211201020011 is an apocalyptic number.

211201020011 is a deficient number, since it is larger than the sum of its proper divisors (1660213).

211201020011 is a wasteful number, since it uses less digits than its factorization.

211201020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660212.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 211201020011 its reverse (110020102112), we get a palindrome (321221122123).

The spelling of 211201020011 in words is "two hundred eleven billion, two hundred one million, twenty thousand, eleven".