201101101021 has 16 divisors (see below), whose sum is σ = 212388914176. Its totient is φ = 190155600000.

The previous prime is 201101101009. The next prime is 201101101087. The reversal of 201101101021 is 120101101102.

It is a cyclic number.

It is not a de Polignac number, because 201101101021 - 2⁵ = 201101100989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201101100989 and 201101101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101101001) 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 15 ways as a sum of consecutive naturals, for example, 66600 + ... + 637681.

It is an arithmetic number, because the mean of its divisors is an integer number (13274307136).

Almost surely, 2^201101101021 is an apocalyptic number.

It is an amenable number.

201101101021 is a deficient number, since it is larger than the sum of its proper divisors (11287813155).

201101101021 is a wasteful number, since it uses less digits than its factorization.

201101101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704524.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 201101101021 its reverse (120101101102), we get a palindrome (321202202123).

The spelling of 201101101021 in words is "two hundred one billion, one hundred one million, one hundred one thousand, twenty-one".