21102002000222 has 32 divisors (see below), whose sum is σ = 37187150837760. Its totient is φ = 8853890173920.

The previous prime is 21102002000221. The next prime is 21102002000227. The reversal of 21102002000222 is 22200020020112.

It is a junction number, because it is equal to n+sod(n) for n = 21102002000197 and 21102002000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102002000221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29782523 + ... + 30482825.

It is an arithmetic number, because the mean of its divisors is an integer number (1162098463680).

Almost surely, 2^{21102002000222} is an apocalyptic number.

21102002000222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21102002000222 is a deficient number, since it is larger than the sum of its proper divisors (16085148837538).

21102002000222 is a wasteful number, since it uses less digits than its factorization.

21102002000222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805688.

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

Adding to 21102002000222 its reverse (22200020020112), we get a palindrome (43302022020334).

The spelling of 21102002000222 in words is "twenty-one trillion, one hundred two billion, two million, two hundred twenty-two", and thus it is an aban number.