21102012001101 has 16 divisors (see below), whose sum is σ = 28475258595840. Its totient is φ = 13898389733040.

The previous prime is 21102012001073. The next prime is 21102012001139. The reversal of 21102012001101 is 10110021020112.

It is not a de Polignac number, because 21102012001101 - 2¹⁰ = 21102012000077 is a prime.

It is a super-2 number, since 2×21102012001101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102012001141) 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, 33682846 + ... + 34303616.

It is an arithmetic number, because the mean of its divisors is an integer number (1779703662240).

Almost surely, 2^{21102012001101} is an apocalyptic number.

It is an amenable number.

21102012001101 is a deficient number, since it is larger than the sum of its proper divisors (7373246594739).

21102012001101 is a wasteful number, since it uses less digits than its factorization.

21102012001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757376.

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

Adding to 21102012001101 its reverse (10110021020112), we get a palindrome (31212033021213).

The spelling of 21102012001101 in words is "twenty-one trillion, one hundred two billion, twelve million, one thousand, one hundred one".