1111032213221 has 16 divisors (see below), whose sum is σ = 1299511382400. Its totient is φ = 930000996288.

The previous prime is 1111032213197. The next prime is 1111032213229. The reversal of 1111032213221 is 1223122301111.

It is not a de Polignac number, because 1111032213221 - 2¹⁸ = 1111031951077 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1111032213193 and 1111032213202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111032213229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1380815 + ... + 2031923.

It is an arithmetic number, because the mean of its divisors is an integer number (81219461400).

Almost surely, 2^{1111032213221} is an apocalyptic number.

It is an amenable number.

1111032213221 is a deficient number, since it is larger than the sum of its proper divisors (188479169179).

1111032213221 is an equidigital number, since it uses as much as digits as its factorization.

1111032213221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656828.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1111032213221 its reverse (1223122301111), we get a palindrome (2334154514332).

The spelling of 1111032213221 in words is "one trillion, one hundred eleven billion, thirty-two million, two hundred thirteen thousand, two hundred twenty-one".