122112210001 has 4 divisors (see below), whose sum is σ = 122254698852. Its totient is φ = 121969721152.

The previous prime is 122112209993. The next prime is 122112210007. The reversal of 122112210001 is 100012211221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105625650001 + 16486560000 = 325001^2 + 128400^2 .

It is a cyclic number.

It is not a de Polignac number, because 122112210001 - 2³ = 122112209993 is a prime.

It is a super-2 number, since 2×122112210001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122112210007) 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 3 ways as a sum of consecutive naturals, for example, 71243140 + ... + 71244853.

It is an arithmetic number, because the mean of its divisors is an integer number (30563674713).

Almost surely, 2^122112210001 is an apocalyptic number.

It is an amenable number.

122112210001 is a deficient number, since it is larger than the sum of its proper divisors (142488851).

122112210001 is an equidigital number, since it uses as much as digits as its factorization.

122112210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142488850.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122112210001 its reverse (100012211221), we get a palindrome (222124421222).

The spelling of 122112210001 in words is "one hundred twenty-two billion, one hundred twelve million, two hundred ten thousand, one".