22202121001 has 4 divisors (see below), whose sum is σ = 22277896452. Its totient is φ = 22126345552.

The previous prime is 22202120999. The next prime is 22202121013. The reversal of 22202121001 is 10012120222.

It is a happy number.

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 11240240400 + 10961880601 = 106020^2 + 104699^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202121001 - 2¹ = 22202120999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22202121041) 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 3 ways as a sum of consecutive naturals, for example, 37887286 + ... + 37887871.

It is an arithmetic number, because the mean of its divisors is an integer number (5569474113).

Almost surely, 2^22202121001 is an apocalyptic number.

It is an amenable number.

22202121001 is a deficient number, since it is larger than the sum of its proper divisors (75775451).

22202121001 is an equidigital number, since it uses as much as digits as its factorization.

22202121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75775450.

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

Adding to 22202121001 its reverse (10012120222), we get a palindrome (32214241223).

The spelling of 22202121001 in words is "twenty-two billion, two hundred two million, one hundred twenty-one thousand, one".