122002220121 has 8 divisors (see below), whose sum is σ = 162671355840. Its totient is φ = 81333948912.

The previous prime is 122002220113. The next prime is 122002220141. The reversal of 122002220121 is 121022200221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122002220121 - 2³ = 122002220113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122002220121.

It is not an unprimeable number, because it can be changed into a prime (122002220141) 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, 268236 + ... + 562098.

It is an arithmetic number, because the mean of its divisors is an integer number (20333919480).

Almost surely, 2^122002220121 is an apocalyptic number.

It is an amenable number.

122002220121 is a deficient number, since it is larger than the sum of its proper divisors (40669135719).

122002220121 is a wasteful number, since it uses less digits than its factorization.

122002220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432255.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122002220121 its reverse (121022200221), we get a palindrome (243024420342).

The spelling of 122002220121 in words is "one hundred twenty-two billion, two million, two hundred twenty thousand, one hundred twenty-one".