21220222210222 has 32 divisors (see below), whose sum is σ = 38753481312000. Its totient is φ = 8511925341888.

The previous prime is 21220222210199. The next prime is 21220222210247. The reversal of 21220222210222 is 22201222202212.

It is a super-2 number, since 2×21220222210222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21220222210193 and 21220222210202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480551847 + ... + 480596002.

It is an arithmetic number, because the mean of its divisors is an integer number (1211046291000).

Almost surely, 2^{21220222210222} is an apocalyptic number.

21220222210222 is a deficient number, since it is larger than the sum of its proper divisors (17533259101778).

21220222210222 is a wasteful number, since it uses less digits than its factorization.

21220222210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961147960.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 21220222210222 its reverse (22201222202212), we get a palindrome (43421444412434).

The spelling of 21220222210222 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty-two".