211202021011 has 4 divisors (see below), whose sum is σ = 211206709224. Its totient is φ = 211197332800.

The previous prime is 211202021003. The next prime is 211202021039. The reversal of 211202021011 is 110120202112.

211202021011 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 211202021011 - 2³ = 211202021003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211202020982 and 211202021000.

It is not an unprimeable number, because it can be changed into a prime (211202021711) 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, 2275870 + ... + 2366851.

It is an arithmetic number, because the mean of its divisors is an integer number (52801677306).

Almost surely, 2^211202021011 is an apocalyptic number.

211202021011 is a deficient number, since it is larger than the sum of its proper divisors (4688213).

211202021011 is an equidigital number, since it uses as much as digits as its factorization.

211202021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4688212.

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

Adding to 211202021011 its reverse (110120202112), we get a palindrome (321322223123).

The spelling of 211202021011 in words is "two hundred eleven billion, two hundred two million, twenty-one thousand, eleven".