22221000101 has 8 divisors (see below), whose sum is σ = 23529527640. Its totient is φ = 20912629248.

The previous prime is 22221000089. The next prime is 22221000187. The reversal of 22221000101 is 10100012222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2969160100 + 19251840001 = 54490^2 + 138751^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22221000101 - 2¹⁴ = 22220983717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221009101) 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, 382745 + ... + 436961.

It is an arithmetic number, because the mean of its divisors is an integer number (2941190955).

Almost surely, 2^22221000101 is an apocalyptic number.

It is an amenable number.

22221000101 is a deficient number, since it is larger than the sum of its proper divisors (1308527539).

22221000101 is a wasteful number, since it uses less digits than its factorization.

22221000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78343.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22221000101 its reverse (10100012222), we get a palindrome (32321012323).

The spelling of 22221000101 in words is "twenty-two billion, two hundred twenty-one million, one hundred one", and thus it is an aban number.