122221100121 has 8 divisors (see below), whose sum is σ = 162968025024. Its totient is φ = 81477454320.

The previous prime is 122221100093. The next prime is 122221100137. The reversal of 122221100121 is 121001122221.

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

It is not a de Polignac number, because 122221100121 - 2¹¹ = 122221098073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122221100121.

It is not an unprimeable number, because it can be changed into a prime (122221100161) 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, 731445 + ... + 882866.

It is an arithmetic number, because the mean of its divisors is an integer number (20371003128).

Almost surely, 2^122221100121 is an apocalyptic number.

It is an amenable number.

122221100121 is a deficient number, since it is larger than the sum of its proper divisors (40746924903).

122221100121 is a wasteful number, since it uses less digits than its factorization.

122221100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639551.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122221100121 its reverse (121001122221), we get a palindrome (243222222342).

The spelling of 122221100121 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred thousand, one hundred twenty-one".