122221220001 has 16 divisors (see below), whose sum is σ = 170439674496. Its totient is φ = 77758154496.

The previous prime is 122221219999. The next prime is 122221220053. The reversal of 122221220001 is 100022122221.

It is not a de Polignac number, because 122221220001 - 2¹ = 122221219999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122221220801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2015530 + ... + 2075283.

It is an arithmetic number, because the mean of its divisors is an integer number (10652479656).

Almost surely, 2^122221220001 is an apocalyptic number.

It is an amenable number.

122221220001 is a deficient number, since it is larger than the sum of its proper divisors (48218454495).

122221220001 is a wasteful number, since it uses less digits than its factorization.

122221220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4091272.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 122221220001 its reverse (100022122221), we get a palindrome (222243342222).

The spelling of 122221220001 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, one".