22121222212202 has 16 divisors (see below), whose sum is σ = 34349087680200. Its totient is φ = 10672038612480.

The previous prime is 22121222212121. The next prime is 22121222212223. The reversal of 22121222212202 is 20221222212122.

It can be written as a sum of positive squares in 4 ways, for example, as 17581173526081 + 4540048686121 = 4192991^2 + 2130739^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127986299 + ... + 128159022.

Almost surely, 2^{22121222212202} is an apocalyptic number.

22121222212202 is a deficient number, since it is larger than the sum of its proper divisors (12227865467998).

22121222212202 is a wasteful number, since it uses less digits than its factorization.

22121222212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256146841.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 22121222212202 its reverse (20221222212122), we get a palindrome (42342444424324).

The spelling of 22121222212202 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred twelve thousand, two hundred two".