11111202102021 has 16 divisors (see below), whose sum is σ = 16931707379328. Its totient is φ = 6349126420800.

The previous prime is 11111202101957. The next prime is 11111202102083. The reversal of 11111202102021 is 12020120211111.

It is a happy number.

It is not a de Polignac number, because 11111202102021 - 2⁶ = 11111202101957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111202602021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4457470 + ... + 6487791.

It is an arithmetic number, because the mean of its divisors is an integer number (1058231711208).

Almost surely, 2^{11111202102021} is an apocalyptic number.

It is an amenable number.

11111202102021 is a deficient number, since it is larger than the sum of its proper divisors (5820505277307).

11111202102021 is a wasteful number, since it uses less digits than its factorization.

11111202102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10993612.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11111202102021 its reverse (12020120211111), we get a palindrome (23131322313132).

The spelling of 11111202102021 in words is "eleven trillion, one hundred eleven billion, two hundred two million, one hundred two thousand, twenty-one".