212222220001 has 16 divisors (see below), whose sum is σ = 237361155840. Its totient is φ = 188089569280.

The previous prime is 212222219971. The next prime is 212222220019. The reversal of 212222220001 is 100022222212.

212222220001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212222220001 - 2¹¹ = 212222217953 is a prime.

It is a super-5 number, since 5×212222220001⁵ (a number of 58 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212222220101) 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, 665746 + ... + 931483.

It is an arithmetic number, because the mean of its divisors is an integer number (14835072240).

Almost surely, 2^212222220001 is an apocalyptic number.

It is an amenable number.

212222220001 is a deficient number, since it is larger than the sum of its proper divisors (25138935839).

212222220001 is a wasteful number, since it uses less digits than its factorization.

212222220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597544.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 212222220001 its reverse (100022222212), we get a palindrome (312244442213).

The spelling of 212222220001 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred twenty thousand, one".