21010200000222 has 16 divisors (see below), whose sum is σ = 42428365050240. Its totient is φ = 6935405825112.

The previous prime is 21010200000173. The next prime is 21010200000227. The reversal of 21010200000222 is 22200000201012.

It is a junction number, because it is equal to n+sod(n) for n = 21010200000198 and 21010200000207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010200000227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16998543072 + ... + 16998544307.

It is an arithmetic number, because the mean of its divisors is an integer number (2651772815640).

Almost surely, 2^{21010200000222} is an apocalyptic number.

21010200000222 is an abundant number, since it is smaller than the sum of its proper divisors (21418165050018).

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

21010200000222 is a wasteful number, since it uses less digits than its factorization.

21010200000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33997087487.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21010200000222 its reverse (22200000201012), we get a palindrome (43210200201234).

The spelling of 21010200000222 in words is "twenty-one trillion, ten billion, two hundred million, two hundred twenty-two", and thus it is an aban number.