122100001 has 4 divisors (see below), whose sum is σ = 129282372. Its totient is φ = 114917632.

The previous prime is 122099993. The next prime is 122100007. The reversal of 122100001 is 100001221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100001221 = 2689 ⋅37189.

It can be written as a sum of positive squares in 2 ways, for example, as 96334225 + 25765776 = 9815^2 + 5076^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100001 - 2³ = 122099993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122100007) 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, 3591160 + ... + 3591193.

It is an arithmetic number, because the mean of its divisors is an integer number (32320593).

Almost surely, 2^122100001 is an apocalyptic number.

It is an amenable number.

122100001 is a deficient number, since it is larger than the sum of its proper divisors (7182371).

122100001 is an equidigital number, since it uses as much as digits as its factorization.

122100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7182370.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 122100001 is about 11049.8869224983. The cubic root of 122100001 is about 496.1030409948.

Adding to 122100001 its reverse (100001221), we get a palindrome (222101222).

The spelling of 122100001 in words is "one hundred twenty-two million, one hundred thousand, one".