221100121001105 has 8 divisors (see below), whose sum is σ = 265338097800000. Its totient is φ = 176868128401776.

The previous prime is 221100121001083. The next prime is 221100121001107. The reversal of 221100121001105 is 501100121001122.

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 221100121001105 - 2²⁸ = 221099852565649 is a prime.

It is a super-2 number, since 2×221100121001105² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221100121001107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495968605 + ... + 1496116394.

It is an arithmetic number, because the mean of its divisors is an integer number (33167262225000).

Almost surely, 2^{221100121001105} is an apocalyptic number.

It is an amenable number.

221100121001105 is a deficient number, since it is larger than the sum of its proper divisors (44237976798895).

221100121001105 is a wasteful number, since it uses less digits than its factorization.

221100121001105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992099783.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 221100121001105 its sum of digits (17), we get a palindrome (221100121001122).

Adding to 221100121001105 its reverse (501100121001122), we get a palindrome (722200242002227).

The spelling of 221100121001105 in words is "two hundred twenty-one trillion, one hundred billion, one hundred twenty-one million, one thousand, one hundred five".