122221001 has 4 divisors (see below), whose sum is σ = 139681152. Its totient is φ = 104760852.

The previous prime is 122220983. The next prime is 122221019. The reversal of 122221001 is 100122221.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (122220983) and next prime (122221019).

It is not a de Polignac number, because 122221001 - 2¹⁴ = 122204617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122221201) 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, 8730065 + ... + 8730078.

It is an arithmetic number, because the mean of its divisors is an integer number (34920288).

Almost surely, 2^122221001 is an apocalyptic number.

It is an amenable number.

122221001 is a deficient number, since it is larger than the sum of its proper divisors (17460151).

122221001 is an equidigital number, since it uses as much as digits as its factorization.

122221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17460150.

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

The square root of 122221001 is about 11055.3607358602. The cubic root of 122221001 is about 496.2668647708.

Adding to 122221001 its reverse (100122221), we get a palindrome (222343222).

The spelling of 122221001 in words is "one hundred twenty-two million, two hundred twenty-one thousand, one".