11102100101021 has 4 divisors (see below), whose sum is σ = 11104705620444. Its totient is φ = 11099494581600.

The previous prime is 11102100100999. The next prime is 11102100101051. The reversal of 11102100101021 is 12010100120111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10446017920900 + 656082180121 = 3232030^2 + 809989^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102100101021 - 2¹⁰ = 11102100099997 is a prime.

It is a super-4 number, since 4×11102100101021⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102100100993 and 11102100101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102100101051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1302753320 + ... + 1302761841.

It is an arithmetic number, because the mean of its divisors is an integer number (2776176405111).

Almost surely, 2^{11102100101021} is an apocalyptic number.

It is an amenable number.

11102100101021 is a deficient number, since it is larger than the sum of its proper divisors (2605519423).

11102100101021 is an equidigital number, since it uses as much as digits as its factorization.

11102100101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605519422.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11102100101021 its reverse (12010100120111), we get a palindrome (23112200221132).

The spelling of 11102100101021 in words is "eleven trillion, one hundred two billion, one hundred million, one hundred one thousand, twenty-one".