21220022010200 has 96 divisors (see below), whose sum is σ = 53601863011200. Its totient is φ = 7765747906560.

The previous prime is 21220022010197. The next prime is 21220022010211. The reversal of 21220022010200 is 201022002212.

It is a super-2 number, since 2×21220022010200² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35819240 + ... + 36406839.

It is an arithmetic number, because the mean of its divisors is an integer number (558352739700).

Almost surely, 2^{21220022010200} is an apocalyptic number.

21220022010200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21220022010200 is an abundant number, since it is smaller than the sum of its proper divisors (32381841001000).

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

21220022010200 is a wasteful number, since it uses less digits than its factorization.

21220022010200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72226221 (or 72226212 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 21220022010200 its reverse (201022002212), we get a palindrome (21421044012412).

The spelling of 21220022010200 in words is "twenty-one trillion, two hundred twenty billion, twenty-two million, ten thousand, two hundred".