121346948221 has 4 divisors (see below), whose sum is σ = 121534502112. Its totient is φ = 121159394332.

The previous prime is 121346948189. The next prime is 121346948257. The reversal of 121346948221 is 122849643121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122849643121 = 67 ⋅1833576763.

It is a cyclic number.

It is not a de Polignac number, because 121346948221 - 2⁵ = 121346948189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121346948621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93775975 + ... + 93777268.

It is an arithmetic number, because the mean of its divisors is an integer number (30383625528).

Almost surely, 2^121346948221 is an apocalyptic number.

It is an amenable number.

121346948221 is a deficient number, since it is larger than the sum of its proper divisors (187553891).

121346948221 is an equidigital number, since it uses as much as digits as its factorization.

121346948221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187553890.

The product of its digits is 165888, while the sum is 43.

The spelling of 121346948221 in words is "one hundred twenty-one billion, three hundred forty-six million, nine hundred forty-eight thousand, two hundred twenty-one".