21222102022202 has 16 divisors (see below), whose sum is σ = 32148645193224. Its totient is φ = 10505889000000.

The previous prime is 21222102022159. The next prime is 21222102022207. The reversal of 21222102022202 is 20222020122212.

It can be written as a sum of positive squares in 4 ways, for example, as 21046908711481 + 175193310721 = 4587691^2 + 418561^2 .

It is a super-3 number, since 3×21222102022202³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (21222102022207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22999952 + ... + 23904852.

Almost surely, 2^{21222102022202} is an apocalyptic number.

21222102022202 is a deficient number, since it is larger than the sum of its proper divisors (10926543171022).

21222102022202 is a wasteful number, since it uses less digits than its factorization.

21222102022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021105.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21222102022202 its reverse (20222020122212), we get a palindrome (41444122144414).

The spelling of 21222102022202 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred two million, twenty-two thousand, two hundred two".