11111202102121 has 8 divisors (see below), whose sum is σ = 12130700486688. Its totient is φ = 10093268568000.

The previous prime is 11111202102109. The next prime is 11111202102127. The reversal of 11111202102121 is 12120120211111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111202102121 - 2¹¹ = 11111202100073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111202102095 and 11111202102104.

It is not an unprimeable number, because it can be changed into a prime (11111202102127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391197760 + ... + 391226161.

It is an arithmetic number, because the mean of its divisors is an integer number (1516337560836).

Almost surely, 2^{11111202102121} is an apocalyptic number.

11111202102121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111202102121 is a deficient number, since it is larger than the sum of its proper divisors (1019498384567).

11111202102121 is a wasteful number, since it uses less digits than its factorization.

11111202102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782425223.

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

Adding to 11111202102121 its reverse (12120120211111), we get a palindrome (23231322313232).

The spelling of 11111202102121 in words is "eleven trillion, one hundred eleven billion, two hundred two million, one hundred two thousand, one hundred twenty-one".