11102001202121 has 4 divisors (see below), whose sum is σ = 11172714585732. Its totient is φ = 11031287818512.

The previous prime is 11102001202037. The next prime is 11102001202129. The reversal of 11102001202121 is 12120210020111.

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 7393988817721 + 3708012384400 = 2719189^2 + 1925620^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102001202121 - 2⁴² = 6703954691017 is a prime.

It is a super-2 number, since 2×11102001202121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11102001202096 and 11102001202105.

It is not an unprimeable number, because it can be changed into a prime (11102001202129) 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, 35356691570 + ... + 35356691883.

It is an arithmetic number, because the mean of its divisors is an integer number (2793178646433).

Almost surely, 2^{11102001202121} is an apocalyptic number.

It is an amenable number.

11102001202121 is a deficient number, since it is larger than the sum of its proper divisors (70713383611).

11102001202121 is an equidigital number, since it uses as much as digits as its factorization.

11102001202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70713383610.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11102001202121 its reverse (12120210020111), we get a palindrome (23222211222232).

The spelling of 11102001202121 in words is "eleven trillion, one hundred two billion, one million, two hundred two thousand, one hundred twenty-one".