122222122121 has 8 divisors (see below), whose sum is σ = 134653356288. Its totient is φ = 110010910000.

The previous prime is 122222122117. The next prime is 122222122123. The reversal of 122222122121 is 121221222221.

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 122222122121 - 2² = 122222122117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122222122093 and 122222122102.

It is not an unprimeable number, because it can be changed into a prime (122222122123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55004345 + ... + 55006566.

It is an arithmetic number, because the mean of its divisors is an integer number (16831669536).

Almost surely, 2^122222122121 is an apocalyptic number.

122222122121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122222122121 is a deficient number, since it is larger than the sum of its proper divisors (12431234167).

122222122121 is a wasteful number, since it uses less digits than its factorization.

122222122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110011023.

The product of its digits is 256, while the sum is 20.

Adding to 122222122121 its reverse (121221222221), we get a palindrome (243443344342).

The spelling of 122222122121 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".