211332122011 has 4 divisors (see below), whose sum is σ = 211333174312. Its totient is φ = 211331069712.

The previous prime is 211332122009. The next prime is 211332122017. The reversal of 211332122011 is 110221233112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211332122011 - 2¹ = 211332122009 is a prime.

It is a super-2 number, since 2×211332122011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211332122011.

It is not an unprimeable number, because it can be changed into a prime (211332122017) 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, 120825 + ... + 661258.

It is an arithmetic number, because the mean of its divisors is an integer number (52833293578).

Almost surely, 2^211332122011 is an apocalyptic number.

211332122011 is a deficient number, since it is larger than the sum of its proper divisors (1052301).

211332122011 is an equidigital number, since it uses as much as digits as its factorization.

211332122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052300.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 211332122011 its reverse (110221233112), we get a palindrome (321553355123).

The spelling of 211332122011 in words is "two hundred eleven billion, three hundred thirty-two million, one hundred twenty-two thousand, eleven".