1111011012221 has 8 divisors (see below), whose sum is σ = 1212249398304. Its totient is φ = 1009812190320.

The previous prime is 1111011012203. The next prime is 1111011012229. The reversal of 1111011012221 is 1222101101111.

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 1111011012221 - 2³⁸ = 836133105277 is a prime.

It is a super-2 number, since 2×1111011012221² (a number of 25 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 = 1111011012196 and 1111011012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111011012229) 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, 9832310 + ... + 9944663.

It is an arithmetic number, because the mean of its divisors is an integer number (151531174788).

Almost surely, 2^{1111011012221} is an apocalyptic number.

1111011012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111011012221 is a deficient number, since it is larger than the sum of its proper divisors (101238386083).

1111011012221 is a wasteful number, since it uses less digits than its factorization.

1111011012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19782091.

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

Adding to 1111011012221 its reverse (1222101101111), we get a palindrome (2333112113332).

The spelling of 1111011012221 in words is "one trillion, one hundred eleven billion, eleven million, twelve thousand, two hundred twenty-one".