211320010221 has 8 divisors (see below), whose sum is σ = 281765611104. Its totient is φ = 140877208080.

The previous prime is 211320010217. The next prime is 211320010241. The reversal of 211320010221 is 122010023112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211320010221 - 2² = 211320010217 is a prime.

It is a super-2 number, since 2×211320010221² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211320010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211320010241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516666 + ... + 830411.

It is an arithmetic number, because the mean of its divisors is an integer number (35220701388).

Almost surely, 2^211320010221 is an apocalyptic number.

It is an amenable number.

211320010221 is a deficient number, since it is larger than the sum of its proper divisors (70445600883).

211320010221 is a wasteful number, since it uses less digits than its factorization.

211320010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399371.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 211320010221 its reverse (122010023112), we get a palindrome (333330033333).

The spelling of 211320010221 in words is "two hundred eleven billion, three hundred twenty million, ten thousand, two hundred twenty-one".