11111200210021 has 8 divisors (see below), whose sum is σ = 11138373929088. Its totient is φ = 11084032944000.

The previous prime is 11111200210003. The next prime is 11111200210039. The reversal of 11111200210021 is 12001200211111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11111200210003) and next prime (11111200210039).

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 11111200210021 - 2¹⁷ = 11111200078949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111200209983 and 11111200210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111200210091) 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, 1843701 + ... + 5061781.

It is an arithmetic number, because the mean of its divisors is an integer number (1392296741136).

Almost surely, 2^{11111200210021} is an apocalyptic number.

It is an amenable number.

11111200210021 is a deficient number, since it is larger than the sum of its proper divisors (27173719067).

11111200210021 is an equidigital number, since it uses as much as digits as its factorization.

11111200210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226523.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11111200210021 its reverse (12001200211111), we get a palindrome (23112400421132).

The spelling of 11111200210021 in words is "eleven trillion, one hundred eleven billion, two hundred million, two hundred ten thousand, twenty-one".