122120001001 has 4 divisors (see below), whose sum is σ = 126059355904. Its totient is φ = 118180646100.

The previous prime is 122120000921. The next prime is 122120001013. The reversal of 122120001001 is 100100021221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100100021221 = 157 ⋅637579753.

It is a cyclic number.

It is not a de Polignac number, because 122120001001 - 2¹³ = 122119992809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122120301001) 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 3 ways as a sum of consecutive naturals, for example, 1969677405 + ... + 1969677466.

It is an arithmetic number, because the mean of its divisors is an integer number (31514838976).

Almost surely, 2^122120001001 is an apocalyptic number.

It is an amenable number.

122120001001 is a deficient number, since it is larger than the sum of its proper divisors (3939354903).

122120001001 is an equidigital number, since it uses as much as digits as its factorization.

122120001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939354902.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 122120001001 its reverse (100100021221), we get a palindrome (222220022222).

The spelling of 122120001001 in words is "one hundred twenty-two billion, one hundred twenty million, one thousand, one".