211313021011 has 4 divisors (see below), whose sum is σ = 211657741072. Its totient is φ = 210968300952.

The previous prime is 211313021009. The next prime is 211313021027. The reversal of 211313021011 is 110120313112.

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 211313021011 - 2¹ = 211313021009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211317021011) 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, 172359111 + ... + 172360336.

It is an arithmetic number, because the mean of its divisors is an integer number (52914435268).

Almost surely, 2^211313021011 is an apocalyptic number.

211313021011 is a deficient number, since it is larger than the sum of its proper divisors (344720061).

211313021011 is an equidigital number, since it uses as much as digits as its factorization.

211313021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344720060.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 211313021011 its reverse (110120313112), we get a palindrome (321433334123).

The spelling of 211313021011 in words is "two hundred eleven billion, three hundred thirteen million, twenty-one thousand, eleven".