11102211021 has 32 divisors (see below), whose sum is σ = 16863114240. Its totient is φ = 6431356800.

The previous prime is 11102211011. The next prime is 11102211031. The reversal of 11102211021 is 12011220111.

It is an interprime number because it is at equal distance from previous prime (11102211011) and next prime (11102211031).

It is not a de Polignac number, because 11102211021 - 2¹⁴ = 11102194637 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11102210988 and 11102211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102211011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1216686 + ... + 1225776.

It is an arithmetic number, because the mean of its divisors is an integer number (526972320).

Almost surely, 2^11102211021 is an apocalyptic number.

11102211021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11102211021 is a deficient number, since it is larger than the sum of its proper divisors (5760903219).

11102211021 is a wasteful number, since it uses less digits than its factorization.

11102211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10737.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11102211021 its reverse (12011220111), we get a palindrome (23113431132).

The spelling of 11102211021 in words is "eleven billion, one hundred two million, two hundred eleven thousand, twenty-one".