21032312211 has 24 divisors (see below), whose sum is σ = 31715532576. Its totient is φ = 13405708800.

The previous prime is 21032312201. The next prime is 21032312233. The reversal of 21032312211 is 11221323012.

21032312211 is a `hidden beast` number, since 210 + 3 + 231 + 221 + 1 = 666.

It is not a de Polignac number, because 21032312211 - 2⁷ = 21032312083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21032312201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448161 + ... + 492861.

It is an arithmetic number, because the mean of its divisors is an integer number (1321480524).

Almost surely, 2^21032312211 is an apocalyptic number.

21032312211 is a deficient number, since it is larger than the sum of its proper divisors (10683220365).

21032312211 is a wasteful number, since it uses less digits than its factorization.

21032312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47003 (or 47000 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21032312211 its reverse (11221323012), we get a palindrome (32253635223).

The spelling of 21032312211 in words is "twenty-one billion, thirty-two million, three hundred twelve thousand, two hundred eleven".