122221222121001 has 32 divisors (see below), whose sum is σ = 164530316206080. Its totient is φ = 80697150870336.

The previous prime is 122221222120993. The next prime is 122221222121039. The reversal of 122221222121001 is 100121222122221.

It is not a de Polignac number, because 122221222121001 - 2³ = 122221222120993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122221222122001) 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 31 ways as a sum of consecutive naturals, for example, 9756617200 + ... + 9756629726.

It is an arithmetic number, because the mean of its divisors is an integer number (5141572381440).

Almost surely, 2^{122221222121001} is an apocalyptic number.

It is an amenable number.

122221222121001 is a deficient number, since it is larger than the sum of its proper divisors (42309094085079).

122221222121001 is a wasteful number, since it uses less digits than its factorization.

122221222121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23613.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 122221222121001 its reverse (100121222122221), we get a palindrome (222342444243222).

The spelling of 122221222121001 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, one".