122121122001 has 4 divisors (see below), whose sum is σ = 162828162672. Its totient is φ = 81414081332.

The previous prime is 122121121933. The next prime is 122121122009. The reversal of 122121122001 is 100221121221.

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.

It is a cyclic number.

It is not a de Polignac number, because 122121122001 - 2¹⁰ = 122121120977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122121122009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20353520331 + ... + 20353520336.

It is an arithmetic number, because the mean of its divisors is an integer number (40707040668).

Almost surely, 2^122121122001 is an apocalyptic number.

It is an amenable number.

122121122001 is a deficient number, since it is larger than the sum of its proper divisors (40707040671).

122121122001 is an equidigital number, since it uses as much as digits as its factorization.

122121122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40707040670.

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

Adding to 122121122001 its reverse (100221121221), we get a palindrome (222342243222).

The spelling of 122121122001 in words is "one hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, one".