1011100011221 has 8 divisors (see below), whose sum is σ = 1016679696000. Its totient is φ = 1005525314640.

The previous prime is 1011100011217. The next prime is 1011100011223. The reversal of 1011100011221 is 1221100011101.

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 1011100011221 - 2² = 1011100011217 is a prime.

It is a super-2 number, since 2×1011100011221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011100011223) 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, 840170 + ... + 1651691.

It is an arithmetic number, because the mean of its divisors is an integer number (127084962000).

Almost surely, 2^{1011100011221} is an apocalyptic number.

It is an amenable number.

1011100011221 is a deficient number, since it is larger than the sum of its proper divisors (5579684779).

1011100011221 is a wasteful number, since it uses less digits than its factorization.

1011100011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494099.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1011100011221 its reverse (1221100011101), we get a palindrome (2232200022322).

The spelling of 1011100011221 in words is "one trillion, eleven billion, one hundred million, eleven thousand, two hundred twenty-one".