121055124221 has 8 divisors (see below), whose sum is σ = 124554734304. Its totient is φ = 117586622160.

The previous prime is 121055124173. The next prime is 121055124277. The reversal of 121055124221 is 122421550121.

It is a happy number.

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 121055124221 - 2¹⁴ = 121055107837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121051124221) 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, 7769111 + ... + 7784676.

It is an arithmetic number, because the mean of its divisors is an integer number (15569341788).

Almost surely, 2^121055124221 is an apocalyptic number.

It is an amenable number.

121055124221 is a deficient number, since it is larger than the sum of its proper divisors (3499610083).

121055124221 is a wasteful number, since it uses less digits than its factorization.

121055124221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15554011.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 121055124221 its reverse (122421550121), we get a palindrome (243476674342).

The spelling of 121055124221 in words is "one hundred twenty-one billion, fifty-five million, one hundred twenty-four thousand, two hundred twenty-one".