21220221013022 has 16 divisors (see below), whose sum is σ = 33265123126560. Its totient is φ = 10133259530592.

The previous prime is 21220221013021. The next prime is 21220221013063. The reversal of 21220221013022 is 22031012202212.

It is a junction number, because it is equal to n+sod(n) for n = 21220221012985 and 21220221013003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220221013021) 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, 353192897 + ... + 353252972.

It is an arithmetic number, because the mean of its divisors is an integer number (2079070195410).

Almost surely, 2^{21220221013022} is an apocalyptic number.

21220221013022 is a deficient number, since it is larger than the sum of its proper divisors (12044902113538).

21220221013022 is a wasteful number, since it uses less digits than its factorization.

21220221013022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706446547.

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

Adding to 21220221013022 its reverse (22031012202212), we get a palindrome (43251233215234).

The spelling of 21220221013022 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-one million, thirteen thousand, twenty-two".