21212102022022 has 8 divisors (see below), whose sum is σ = 31818189639456. Its totient is φ = 10606038808872.

The previous prime is 21212102021983. The next prime is 21212102022053. The reversal of 21212102022022 is 22022020121212.

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

It is a super-3 number, since 3×21212102022022³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3746313 + ... + 7513924.

It is an arithmetic number, because the mean of its divisors is an integer number (3977273704932).

Almost surely, 2^{21212102022022} is an apocalyptic number.

21212102022022 is a deficient number, since it is larger than the sum of its proper divisors (10606087617434).

21212102022022 is a wasteful number, since it uses less digits than its factorization.

21212102022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12202142.

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

Adding to 21212102022022 its reverse (22022020121212), we get a palindrome (43234122143234).

The spelling of 21212102022022 in words is "twenty-one trillion, two hundred twelve billion, one hundred two million, twenty-two thousand, twenty-two".