20211222002201 has 4 divisors (see below), whose sum is σ = 20211756290304. Its totient is φ = 20210687714100.

The previous prime is 20211222002173. The next prime is 20211222002221. The reversal of 20211222002201 is 10220022211202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20211222002201 - 2³⁴ = 20194042133017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20211222002201.

It is not an unprimeable number, because it can be changed into a prime (20211222002221) 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, 267087305 + ... + 267162966.

It is an arithmetic number, because the mean of its divisors is an integer number (5052939072576).

Almost surely, 2^{20211222002201} is an apocalyptic number.

It is an amenable number.

20211222002201 is a deficient number, since it is larger than the sum of its proper divisors (534288103).

20211222002201 is an equidigital number, since it uses as much as digits as its factorization.

20211222002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534288102.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20211222002201 its reverse (10220022211202), we get a palindrome (30431244213403).

The spelling of 20211222002201 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, two thousand, two hundred one".