22221312101 has 4 divisors (see below), whose sum is σ = 22227466092. Its totient is φ = 22215158112.

The previous prime is 22221312059. The next prime is 22221312109. The reversal of 22221312101 is 10121312222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7640508100 + 14580804001 = 87410^2 + 120751^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221312101 - 2²⁶ = 22154203237 is a prime.

It is a super-2 number, since 2×22221312101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22221312101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221312109) 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, 3071576 + ... + 3078801.

It is an arithmetic number, because the mean of its divisors is an integer number (5556866523).

Almost surely, 2^22221312101 is an apocalyptic number.

It is an amenable number.

22221312101 is a deficient number, since it is larger than the sum of its proper divisors (6153991).

22221312101 is an equidigital number, since it uses as much as digits as its factorization.

22221312101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6153990.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22221312101 its reverse (10121312222), we get a palindrome (32342624323).

The spelling of 22221312101 in words is "twenty-two billion, two hundred twenty-one million, three hundred twelve thousand, one hundred one".