21222102022 has 64 divisors (see below), whose sum is σ = 37172390400. Its totient is φ = 8985600000.

The previous prime is 21222101987. The next prime is 21222102023. The reversal of 21222102022 is 22020122212.

It is a super-2 number, since 2×21222102022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21222101987 and 21222102005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222102023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6373254 + ... + 6376582.

It is an arithmetic number, because the mean of its divisors is an integer number (580818600).

Almost surely, 2^21222102022 is an apocalyptic number.

21222102022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21222102022 is a deficient number, since it is larger than the sum of its proper divisors (15950288378).

21222102022 is a wasteful number, since it uses less digits than its factorization.

21222102022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613.

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

Adding to 21222102022 its reverse (22020122212), we get a palindrome (43242224234).

The spelling of 21222102022 in words is "twenty-one billion, two hundred twenty-two million, one hundred two thousand, twenty-two".