21212020000222 has 16 divisors (see below), whose sum is σ = 33689947814352. Its totient is φ = 9982047358080.

The previous prime is 21212020000219. The next prime is 21212020000247. The reversal of 21212020000222 is 22200002021212.

It is a junction number, because it is equal to n+sod(n) for n = 21212020000196 and 21212020000205.

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, 1944772 + ... + 6797512.

It is an arithmetic number, because the mean of its divisors is an integer number (2105621738397).

Almost surely, 2^{21212020000222} is an apocalyptic number.

21212020000222 is a deficient number, since it is larger than the sum of its proper divisors (12477927814130).

21212020000222 is a wasteful number, since it uses less digits than its factorization.

21212020000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4981323.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21212020000222 its reverse (22200002021212), we get a palindrome (43412022021434).

The spelling of 21212020000222 in words is "twenty-one trillion, two hundred twelve billion, twenty million, two hundred twenty-two", and thus it is an aban number.