1111021221011 has 8 divisors (see below), whose sum is σ = 1199641348080. Its totient is φ = 1022852087712.

The previous prime is 1111021220999. The next prime is 1111021221043. The reversal of 1111021221011 is 1101221201111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111021221011 - 2¹⁴ = 1111021204627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111021227011) 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 7 ways as a sum of consecutive naturals, for example, 112743320 + ... + 112753173.

It is an arithmetic number, because the mean of its divisors is an integer number (149955168510).

Almost surely, 2^{1111021221011} is an apocalyptic number.

1111021221011 is a deficient number, since it is larger than the sum of its proper divisors (88620127069).

1111021221011 is a wasteful number, since it uses less digits than its factorization.

1111021221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225496885.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111021221011 its reverse (1101221201111), we get a palindrome (2212242422122).

The spelling of 1111021221011 in words is "one trillion, one hundred eleven billion, twenty-one million, two hundred twenty-one thousand, eleven".