122124223655221 has 4 divisors (see below), whose sum is σ = 122128759063872. Its totient is φ = 122119688246572.

The previous prime is 122124223655201. The next prime is 122124223655249. The reversal of 122124223655221 is 122556322421221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122124223655221 - 2²¹ = 122124221558069 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 (122124223655201) 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 3 ways as a sum of consecutive naturals, for example, 2267663935 + ... + 2267717788.

It is an arithmetic number, because the mean of its divisors is an integer number (30532189765968).

Almost surely, 2^{122124223655221} is an apocalyptic number.

It is an amenable number.

122124223655221 is a deficient number, since it is larger than the sum of its proper divisors (4535408651).

122124223655221 is an equidigital number, since it uses as much as digits as its factorization.

122124223655221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535408650.

The product of its digits is 230400, while the sum is 40.

The spelling of 122124223655221 in words is "one hundred twenty-two trillion, one hundred twenty-four billion, two hundred twenty-three million, six hundred fifty-five thousand, two hundred twenty-one".