21220103021222 has 16 divisors (see below), whose sum is σ = 36518865461280. Its totient is φ = 9058943367168.

The previous prime is 21220103021177. The next prime is 21220103021231. The reversal of 21220103021222 is 22212030102212.

It is a junction number, because it is equal to n+sod(n) for n = 21220103021194 and 21220103021203.

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, 2948871197 + ... + 2948878392.

It is an arithmetic number, because the mean of its divisors is an integer number (2282429091330).

Almost surely, 2^{21220103021222} is an apocalyptic number.

21220103021222 is a deficient number, since it is larger than the sum of its proper divisors (15298762440058).

21220103021222 is a wasteful number, since it uses less digits than its factorization.

21220103021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5897749855.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21220103021222 its reverse (22212030102212), we get a palindrome (43432133123434).

The spelling of 21220103021222 in words is "twenty-one trillion, two hundred twenty billion, one hundred three million, twenty-one thousand, two hundred twenty-two".