222101022001 has 4 divisors (see below), whose sum is σ = 222102038772. Its totient is φ = 222100005232.

The previous prime is 222101021971. The next prime is 222101022029. The reversal of 222101022001 is 100220101222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 69941736225 + 152159285776 = 264465^2 + 390076^2 .

It is a cyclic number.

It is not a de Polignac number, because 222101022001 - 2⁹ = 222101021489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222101022061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31810 + ... + 667243.

It is an arithmetic number, because the mean of its divisors is an integer number (55525509693).

Almost surely, 2^222101022001 is an apocalyptic number.

It is an amenable number.

222101022001 is a deficient number, since it is larger than the sum of its proper divisors (1016771).

222101022001 is an equidigital number, since it uses as much as digits as its factorization.

222101022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016770.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222101022001 its reverse (100220101222), we get a palindrome (322321123223).

The spelling of 222101022001 in words is "two hundred twenty-two billion, one hundred one million, twenty-two thousand, one".