22022222212021 has 8 divisors (see below), whose sum is σ = 22486844648664. Its totient is φ = 21562003779840.

The previous prime is 22022222212019. The next prime is 22022222212073. The reversal of 22022222212021 is 12021222222022.

It can be written as a sum of positive squares in 4 ways, for example, as 3760830189796 + 18261392022225 = 1939286^2 + 4273335^2 .

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 22022222212021 - 2¹ = 22022222212019 is a prime.

It is a super-2 number, since 2×22022222212021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22022222211983 and 22022222212001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022222212721) 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, 1100991010 + ... + 1101011011.

It is an arithmetic number, because the mean of its divisors is an integer number (2810855581083).

Almost surely, 2^{22022222212021} is an apocalyptic number.

It is an amenable number.

22022222212021 is a deficient number, since it is larger than the sum of its proper divisors (464622436643).

22022222212021 is a wasteful number, since it uses less digits than its factorization.

22022222212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202002231.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 22022222212021 its reverse (12021222222022), we get a palindrome (34043444434043).

The spelling of 22022222212021 in words is "twenty-two trillion, twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, twenty-one".