122222001 has 16 divisors (see below), whose sum is σ = 177969600. Its totient is φ = 73993920.

The previous prime is 122221999. The next prime is 122222017. The reversal of 122222001 is 100222221.

It is not a de Polignac number, because 122222001 - 2¹ = 122221999 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (122222071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46675 + ... + 49223.

It is an arithmetic number, because the mean of its divisors is an integer number (11123100).

Almost surely, 2^122222001 is an apocalyptic number.

122222001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122222001 is a deficient number, since it is larger than the sum of its proper divisors (55747599).

122222001 is a wasteful number, since it uses less digits than its factorization.

122222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 122222001 is about 11055.4059626954. The cubic root of 122222001 is about 496.2682182358.

Adding to 122222001 its reverse (100222221), we get a palindrome (222444222).

The spelling of 122222001 in words is "one hundred twenty-two million, two hundred twenty-two thousand, one".