221101120121 has 8 divisors (see below), whose sum is σ = 265986310080. Its totient is φ = 179540759088.

The previous prime is 221101120103. The next prime is 221101120129. The reversal of 221101120121 is 121021101122.

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 221101120121 - 2⁶ = 221101120057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221101120096 and 221101120105.

It is not an unprimeable number, because it can be changed into a prime (221101120129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831207086 + ... + 831207351.

It is an arithmetic number, because the mean of its divisors is an integer number (33248288760).

Almost surely, 2^221101120121 is an apocalyptic number.

It is an amenable number.

221101120121 is a deficient number, since it is larger than the sum of its proper divisors (44885189959).

221101120121 is a wasteful number, since it uses less digits than its factorization.

221101120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662414463.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221101120121 its reverse (121021101122), we get a palindrome (342122221243).

The spelling of 221101120121 in words is "two hundred twenty-one billion, one hundred one million, one hundred twenty thousand, one hundred twenty-one".