1000222323221 has 8 divisors (see below), whose sum is σ = 1092146307264. Its totient is φ = 908464119520.

The previous prime is 1000222323187. The next prime is 1000222323227. The reversal of 1000222323221 is 1223232220001.

It is a happy number.

1000222323221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000222323221 is a prime.

It is a super-2 number, since 2×1000222323221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000222323193 and 1000222323202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000222323227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41432465 + ... + 41456598.

It is an arithmetic number, because the mean of its divisors is an integer number (136518288408).

Almost surely, 2^{1000222323221} is an apocalyptic number.

1000222323221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000222323221 is a deficient number, since it is larger than the sum of its proper divisors (91923984043).

1000222323221 is a wasteful number, since it uses less digits than its factorization.

1000222323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82890171.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1000222323221 its reverse (1223232220001), we get a palindrome (2223454543222).

The spelling of 1000222323221 in words is "one trillion, two hundred twenty-two million, three hundred twenty-three thousand, two hundred twenty-one".