210101221011 has 8 divisors (see below), whose sum is σ = 305601776064. Its totient is φ = 127334073320.

The previous prime is 210101220961. The next prime is 210101221111. The reversal of 210101221011 is 110122101012.

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

It is a cyclic number.

It is not a de Polignac number, because 210101221011 - 2⁷ = 210101220883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210101221111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3183351801 + ... + 3183351866.

It is an arithmetic number, because the mean of its divisors is an integer number (38200222008).

Almost surely, 2^210101221011 is an apocalyptic number.

210101221011 is a deficient number, since it is larger than the sum of its proper divisors (95500555053).

210101221011 is a wasteful number, since it uses less digits than its factorization.

210101221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6366703681.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 210101221011 its reverse (110122101012), we get a palindrome (320223322023).

The spelling of 210101221011 in words is "two hundred ten billion, one hundred one million, two hundred twenty-one thousand, eleven".