11111002210021 has 8 divisors (see below), whose sum is σ = 12698459130240. Its totient is φ = 9523588012368.

The previous prime is 11111002210003. The next prime is 11111002210031. The reversal of 11111002210021 is 12001220011111.

It is a happy number.

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 11111002210021 - 2¹⁷ = 11111002078949 is a prime.

It is a super-2 number, since 2×11111002210021² (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 = 11111002209983 and 11111002210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111002210031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10121386 + ... + 11165323.

It is an arithmetic number, because the mean of its divisors is an integer number (1587307391280).

Almost surely, 2^{11111002210021} is an apocalyptic number.

It is an amenable number.

11111002210021 is a deficient number, since it is larger than the sum of its proper divisors (1587456920219).

11111002210021 is an equidigital number, since it uses as much as digits as its factorization.

11111002210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21361283.

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

Adding to 11111002210021 its reverse (12001220011111), we get a palindrome (23112222221132).

The spelling of 11111002210021 in words is "eleven trillion, one hundred eleven billion, two million, two hundred ten thousand, twenty-one".