122621722121 has 8 divisors (see below), whose sum is σ = 123801277824. Its totient is φ = 121442788080.

The previous prime is 122621722099. The next prime is 122621722123. The reversal of 122621722121 is 121227126221.

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 122621722121 - 2⁶ = 122621722057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122621722123) 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, 245936 + ... + 552926.

It is an arithmetic number, because the mean of its divisors is an integer number (15475159728).

Almost surely, 2^122621722121 is an apocalyptic number.

It is an amenable number.

122621722121 is a deficient number, since it is larger than the sum of its proper divisors (1179555703).

122621722121 is a wasteful number, since it uses less digits than its factorization.

122621722121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310831.

The product of its digits is 2688, while the sum is 29.

Adding to 122621722121 its reverse (121227126221), we get a palindrome (243848848342).

The spelling of 122621722121 in words is "one hundred twenty-two billion, six hundred twenty-one million, seven hundred twenty-two thousand, one hundred twenty-one".