20222201122021 has 4 divisors (see below), whose sum is σ = 20265503480352. Its totient is φ = 20178898763692.

The previous prime is 20222201121977. The next prime is 20222201122033. The reversal of 20222201122021 is 12022110222202.

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 20222201122021 - 2⁷ = 20222201121893 is a prime.

It is a super-2 number, since 2×20222201122021² (a number of 27 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 20222201122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222201122091) 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, 21651178465 + ... + 21651179398.

It is an arithmetic number, because the mean of its divisors is an integer number (5066375870088).

Almost surely, 2^{20222201122021} is an apocalyptic number.

It is an amenable number.

20222201122021 is a deficient number, since it is larger than the sum of its proper divisors (43302358331).

20222201122021 is an equidigital number, since it uses as much as digits as its factorization.

20222201122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43302358330.

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

Adding to 20222201122021 its reverse (12022110222202), we get a palindrome (32244311344223).

The spelling of 20222201122021 in words is "twenty trillion, two hundred twenty-two billion, two hundred one million, one hundred twenty-two thousand, twenty-one".