211332220031 has 4 divisors (see below), whose sum is σ = 216486664464. Its totient is φ = 206177775600.

The previous prime is 211332220007. The next prime is 211332220049. The reversal of 211332220031 is 130022233112.

211332220031 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 211332220031 - 2¹⁴ = 211332203647 is a prime.

It is a super-2 number, since 2×211332220031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211332219985 and 211332220012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211332220331) 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, 2577222155 + ... + 2577222236.

It is an arithmetic number, because the mean of its divisors is an integer number (54121666116).

Almost surely, 2^211332220031 is an apocalyptic number.

211332220031 is a deficient number, since it is larger than the sum of its proper divisors (5154444433).

211332220031 is an equidigital number, since it uses as much as digits as its factorization.

211332220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5154444432.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 211332220031 its reverse (130022233112), we get a palindrome (341354453143).

The spelling of 211332220031 in words is "two hundred eleven billion, three hundred thirty-two million, two hundred twenty thousand, thirty-one".