21211202022 has 16 divisors (see below), whose sum is σ = 44917839792. Its totient is φ = 6654494720.

The previous prime is 21211201987. The next prime is 21211202099. The reversal of 21211202022 is 22020211212.

21211202022 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21211201992 and 21211202010.

It is a congruent number.

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, 103976379 + ... + 103976582.

It is an arithmetic number, because the mean of its divisors is an integer number (2807364987).

Almost surely, 2^21211202022 is an apocalyptic number.

21211202022 is an abundant number, since it is smaller than the sum of its proper divisors (23706637770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211202022 is a wasteful number, since it uses less digits than its factorization.

21211202022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207952983.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21211202022 its reverse (22020211212), we get a palindrome (43231413234).

The spelling of 21211202022 in words is "twenty-one billion, two hundred eleven million, two hundred two thousand, twenty-two".