122210001 has 12 divisors (see below), whose sum is σ = 181297012. Its totient is φ = 79271136.

The previous prime is 122209993. The next prime is 122210027. The reversal of 122210001 is 100012221.

It can be written as a sum of positive squares in 2 ways, for example, as 106812225 + 15397776 = 10335^2 + 3924^2 .

It is not a de Polignac number, because 122210001 - 2³ = 122209993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122210041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183166 + ... + 183831.

Almost surely, 2^122210001 is an apocalyptic number.

It is an amenable number.

122210001 is a deficient number, since it is larger than the sum of its proper divisors (59087011).

122210001 is a wasteful number, since it uses less digits than its factorization.

122210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367040 (or 367037 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 122210001 is about 11054.8632284619. The cubic root of 122210001 is about 496.2519761695.

Adding to 122210001 its reverse (100012221), we get a palindrome (222222222).

The spelling of 122210001 in words is "one hundred twenty-two million, two hundred ten thousand, one".