211312030011 has 4 divisors (see below), whose sum is σ = 281749373352. Its totient is φ = 140874686672.

The previous prime is 211312030001. The next prime is 211312030019. The reversal of 211312030011 is 110030213112.

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 211312030011 - 2⁶ = 211312029947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211312030019) 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, 35218671666 + ... + 35218671671.

It is an arithmetic number, because the mean of its divisors is an integer number (70437343338).

Almost surely, 2^211312030011 is an apocalyptic number.

211312030011 is a deficient number, since it is larger than the sum of its proper divisors (70437343341).

211312030011 is an equidigital number, since it uses as much as digits as its factorization.

211312030011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70437343340.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 211312030011 its reverse (110030213112), we get a palindrome (321342243123).

The spelling of 211312030011 in words is "two hundred eleven billion, three hundred twelve million, thirty thousand, eleven".