122120002000001 has 4 divisors (see below), whose sum is σ = 122560868433492. Its totient is φ = 121679135566512.

The previous prime is 122120001999997. The next prime is 122120002000039. The reversal of 122120002000001 is 100000200021221.

It is a happy number.

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 42231282073600 + 79888719926401 = 6498560^2 + 8938049^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120002000001 - 2² = 122120001999997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122120002000201) 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, 220433216330 + ... + 220433216883.

It is an arithmetic number, because the mean of its divisors is an integer number (30640217108373).

Almost surely, 2^{122120002000001} is an apocalyptic number.

It is an amenable number.

122120002000001 is a deficient number, since it is larger than the sum of its proper divisors (440866433491).

122120002000001 is an equidigital number, since it uses as much as digits as its factorization.

122120002000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440866433490.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122120002000001 its reverse (100000200021221), we get a palindrome (222120202021222).

The spelling of 122120002000001 in words is "one hundred twenty-two trillion, one hundred twenty billion, two million, one", and thus it is an aban number.