211221133010 has 16 divisors (see below), whose sum is σ = 402562630296. Its totient is φ = 79518544128.

The previous prime is 211221132961. The next prime is 211221133021. The reversal of 211221133010 is 10331122112.

211221133010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 210962920249 + 258212761 = 459307^2 + 16069^2 .

It is a super-2 number, since 2×211221133010² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211221133010.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 621238457 + ... + 621238796.

Almost surely, 2^211221133010 is an apocalyptic number.

211221133010 is a deficient number, since it is larger than the sum of its proper divisors (191341497286).

211221133010 is a wasteful number, since it uses less digits than its factorization.

211221133010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242477277.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211221133010 its reverse (10331122112), we get a palindrome (221552255122).

The spelling of 211221133010 in words is "two hundred eleven billion, two hundred twenty-one million, one hundred thirty-three thousand, ten".