210021122221222 has 64 divisors (see below), whose sum is σ = 350946779742720. Its totient is φ = 93608371584000.

The previous prime is 210021122221217. The next prime is 210021122221249. The reversal of 210021122221222 is 222122221120012.

It is a super-2 number, since 2×210021122221222² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210021122221193 and 210021122221202.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3241384458 + ... + 3241449250.

It is an arithmetic number, because the mean of its divisors is an integer number (5483543433480).

Almost surely, 2^{210021122221222} is an apocalyptic number.

210021122221222 is a deficient number, since it is larger than the sum of its proper divisors (140925657521498).

210021122221222 is a wasteful number, since it uses less digits than its factorization.

210021122221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73249.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 210021122221222 its reverse (222122221120012), we get a palindrome (432143343341234).

The spelling of 210021122221222 in words is "two hundred ten trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-two".