110011112001221 has 8 divisors (see below), whose sum is σ = 110802791006040. Its totient is φ = 109220584531968.

The previous prime is 110011112001211. The next prime is 110011112001223. The reversal of 110011112001221 is 122100211110011.

It can be written as a sum of positive squares in 4 ways, for example, as 131450478721 + 109879661522500 = 362561^2 + 10482350^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110011112001221 is a prime.

It is a super-2 number, since 2×110011112001221² (a number of 29 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 = 110011112001196 and 110011112001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110011112001223) 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, 287692136 + ... + 288074273.

It is an arithmetic number, because the mean of its divisors is an integer number (13850348875755).

Almost surely, 2^{110011112001221} is an apocalyptic number.

It is an amenable number.

110011112001221 is a deficient number, since it is larger than the sum of its proper divisors (791679004819).

110011112001221 is a wasteful number, since it uses less digits than its factorization.

110011112001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575767783.

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

Adding to 110011112001221 its reverse (122100211110011), we get a palindrome (232111323111232).

The spelling of 110011112001221 in words is "one hundred ten trillion, eleven billion, one hundred twelve million, one thousand, two hundred twenty-one".