210101101101 has 16 divisors (see below), whose sum is σ = 314469769600. Its totient is φ = 138623405184.

The previous prime is 210101101087. The next prime is 210101101103. The reversal of 210101101101 is 101101101012.

It is not a de Polignac number, because 210101101101 - 2⁹ = 210101100589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101101103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40108321 + ... + 40113558.

It is an arithmetic number, because the mean of its divisors is an integer number (19654360600).

Almost surely, 2^210101101101 is an apocalyptic number.

It is an amenable number.

210101101101 is a deficient number, since it is larger than the sum of its proper divisors (104368668499).

210101101101 is an equidigital number, since it uses as much as digits as its factorization.

210101101101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80221985 (or 80221979 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 210101101101 its reverse (101101101012), we get a palindrome (311202202113).

The spelling of 210101101101 in words is "two hundred ten billion, one hundred one million, one hundred one thousand, one hundred one".