22022011220021 has 8 divisors (see below), whose sum is σ = 22617260305080. Its totient is φ = 21426765271488.

The previous prime is 22022011220017. The next prime is 22022011220057. The reversal of 22022011220021 is 12002211022022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3363974164996 + 18658037055025 = 1834114^2 + 4319495^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22022011220021 - 2² = 22022011220017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022011222021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23364275 + ... + 24288543.

It is an arithmetic number, because the mean of its divisors is an integer number (2827157538135).

Almost surely, 2^{22022011220021} is an apocalyptic number.

It is an amenable number.

22022011220021 is a deficient number, since it is larger than the sum of its proper divisors (595249085059).

22022011220021 is an equidigital number, since it uses as much as digits as its factorization.

22022011220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568263.

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

Adding to 22022011220021 its reverse (12002211022022), we get a palindrome (34024222242043).

The spelling of 22022011220021 in words is "twenty-two trillion, twenty-two billion, eleven million, two hundred twenty thousand, twenty-one".