21221010201022 has 16 divisors (see below), whose sum is σ = 34587724608000. Its totient is φ = 9727797544920.

The previous prime is 21221010200987. The next prime is 21221010201037. The reversal of 21221010201022 is 22010201012212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21221010200987 and 21221010201005.

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, 9007218772 + ... + 9007221127.

It is an arithmetic number, because the mean of its divisors is an integer number (2161732788000).

Almost surely, 2^{21221010201022} is an apocalyptic number.

21221010201022 is a deficient number, since it is larger than the sum of its proper divisors (13366714406978).

21221010201022 is a wasteful number, since it uses less digits than its factorization.

21221010201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18014439951.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21221010201022 its reverse (22010201012212), we get a palindrome (43231211213234).

The spelling of 21221010201022 in words is "twenty-one trillion, two hundred twenty-one billion, ten million, two hundred one thousand, twenty-two".