22021102222201 has 4 divisors (see below), whose sum is σ = 22021663551732. Its totient is φ = 22020540892672.

The previous prime is 22021102222139. The next prime is 22021102222279. The reversal of 22021102222201 is 10222220112022.

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 548304706576 + 21472797515625 = 740476^2 + 4633875^2 .

It is a cyclic number.

It is not a de Polignac number, because 22021102222201 - 2²¹ = 22021100125049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22021102228201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280605916 + ... + 280684381.

It is an arithmetic number, because the mean of its divisors is an integer number (5505415887933).

Almost surely, 2^{22021102222201} is an apocalyptic number.

It is an amenable number.

22021102222201 is a deficient number, since it is larger than the sum of its proper divisors (561329531).

22021102222201 is an equidigital number, since it uses as much as digits as its factorization.

22021102222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561329530.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22021102222201 its reverse (10222220112022), we get a palindrome (32243322334223).

The spelling of 22021102222201 in words is "twenty-two trillion, twenty-one billion, one hundred two million, two hundred twenty-two thousand, two hundred one".